Radiation Instrument Index

Canberra MIP 10 Digital Now Mirion Technologies

Detector

none built in; two probe inputs, one for CSP smart probes and one for older Nardeux probes, so two probes can be connected at once (e.g. SG 1R, SAB 100, SB 100, SPAB 15 and SBM series CSP probes)

Detects

alpha, beta, gamma and X-ray, depending on the probe connected

Range

units shown depend on the probe: c/s, Bqeq, Bqeq/cm2, Sv/h, Sveq/h (Nardeux probes via MIP10/MIP21 adaptor show c/s only); semi-log bargraph over four decades, as fast as 1/4 s; digital readout 1 s; scaler/timer mode 1 to 1000 s integration

Bench or pedestal ratemeter for contamination and dose rate probes at control points and in labs, with per-probe alarm setpoints.

Successor to the MIP 10; same dimensions so it fits MIP 10 accessories; 62 x 213 x 225 mm, 1800 g (4 lb); metal housing; IP 40; -10 to +50 C; built-in NiMH backup batteries, over 40 h with CSP probes and over 15 h with Nardeux probes, full charge under 5 h; mains 100-240 V ac 50/60 Hz; CSP alarm setpoints (10 values) are stored in the probe, Nardeux setpoint in the meter; optional 1 m pedestal; Avior is the single-input CSP-only alternative. Datasheet C39173, 11/2011.

Eberline AC-3-7 / AC-3-8 Now Thermo Fisher Scientific

Detector

Alpha scintillators (CP-1 connector)

Detects

alpha

Hand probes for alpha surface contamination.

Probe for the ASP-2 and ASP-2e ratemeters (up to 1500 V).

Eberline ASP-2 Now Thermo Fisher Scientific

Detector

None built in; accepts GM, gas proportional and scintillation probes (MHV, BNC or CP-1 connectors)

Detects

depends on probe (alpha, beta, gamma, neutron)

Range

Probe HV 300 to 2500 V; thresholds 0.5 to 60 mV; units CPS, CPM, DPS, DPM, Bq, R/hr, Sv/hr, Gy/hr, Rem/hr

General-purpose portable ratemeter that reads out contamination or dose rate from the probe plugged into it.

Basic model: ratemeter mode only. Set up with the WinASP2 host program; 3 C cells, about 100 h.

Eberline ASP-2e Now Thermo Fisher Scientific

Detector

None built in; accepts GM, gas proportional and scintillation probes (MHV, BNC or CP-1 connectors)

Detects

depends on probe (alpha, beta, gamma, neutron)

Range

Probe HV 300 to 2500 V; thresholds 0.5 to 60 mV; units CPS, CPM, DPS, DPM, Bq, R/hr, Sv/hr, Gy/hr, Rem/hr

General-purpose portable ratemeter that reads out contamination or dose rate from the probe plugged into it.

Adds integrated dose, scaler counts and a pulse height window for energy-proportional probes (same manual as ASP-2).

Eberline E-140 Now Thermo Fisher Scientific

Detector

No internal detector; takes an external GM probe on a BNC connector (at Hanford used with the pancake GM probe, P-11 type). Adjustable high voltage 200 to 1500 V.

Detects

Set by the probe; with a pancake GM probe, beta and gamma contamination.

Range

Meter 0 to 1,000 cpm with X1, X10, X100 ranges, upper limit 100,000 cpm (some units have a 0 to 500 cpm dial); linearity ±5% of full scale; response adjustable 2 to 10 seconds

Count rate meter that techs pair with a pancake GM probe for frisking and contamination surveys.

E-140B, BNW and BNW-1 are essentially identical. Attached speaker with its own on/off switch; phone jack for headphones or a scaler; BAT TEST position; RESET button; FAST/SLOW response switch. 2 D cells, about 200 hours. 1.5 kg (3.4 lb); 22 x 9.8 x 18 cm (8.5 x 3.9 x 6.9 in) with handle and probe clip.

Eberline E-600 Now Thermo Fisher Scientific

Detector

None internal. Takes Eberline smart probes (calibration and setup stored in the probe handle) or conventional probes, covering GM, scintillation, proportional, ion chamber and neutron detectors. Probe connector can carry over 2,000 V. Common Hanford pairings: SHP-380AB, SHP-380A (100 cm2 alpha/beta and alpha scintillators) and the NRD neutron rem ball.

Detects

Set by the probe: alpha, beta, gamma, neutron or energy windows. Up to three channels with independent alarms; alpha, beta-gamma and total channels can be shown at the same time.

Range

Units selectable by probe setup: cps, cpm, dps, dpm, Bq, dpm/100 cm2, Sv/h, Gy/h, R/h, rem/h and integrated counts, Sv, Gy, R, rem. Full-scale range changes by decades with up/down keys or auto-ranging; the digital display stays accurate to twice the meter scale. Simultaneous analog bar graph and digital readout. Modes: ratemeter, integrate, scaler, peak trap, background, check.

General purpose digital survey meter that techs swap between alpha/beta contamination, gamma and neutron probes without recalibrating.

Technical Manual rev. July 1995 (the E-600 was designed to replace a wide range of older portables). 22.9 x 10.5 x 15.3 cm (9.0 x 4.1 x 6.0 in); 1.53 kg (3.4 lb) with batteries. 3 alkaline C cells, typically 50 to 100 hours. Operating -20 to +50 C, storage -30 to +70 C, 0 to 95% non-condensing humidity. Log memory for 500 results. Windows interface program for setup and calibration. Hanford notes: audible output limited to 75 cps (4500 cpm); slow/medium/fast smart-channel response 20/10/3 s. Alpha check source is often a 0.85 nCi (about 2000 dpm) Th-230 source on the side of the case.

Eberline ESP-1 Now Thermo Fisher Scientific

Detector

None internal. Most Eberline GM, proportional or scintillation detectors for alpha, beta, gamma or neutron can be used, on an MHV-series connector. Detector bias 350 to 2300 Vdc, set by the calibrator for the detector in use.

Detects

Set by the probe: alpha, beta, gamma or neutron.

Range

Basic unit is counts per second. Modes: Rate Meter (slow and fast response that switch automatically with count rate), Scaler, Inquiry/Calibration. Two-line, 16-character alphanumeric LCD with a bar graph of 1 in 48 resolution.

Digital count rate and scaler instrument for contamination and radiation surveys with a choice of Eberline probes.

From the ESP-1 Technical Manual (February 1992). 26.0 x 12.7 x 12.7 cm (10.25 x 5.0 x 5.0 in), about 1.72 kg (3.8 lb) with batteries, without probe. Six C cells, about 250 hours on carbon-zinc cells (no display light). -20 to +50 C. Seven front-panel buttons (ON/OFF, MODE, RESET, LIGHT, +, -, SPKR); 2000 Hz audible alarm.

Eberline HP-100 series (HP-100C, HP-100CGS) Now Thermo Fisher Scientific

Detector

100 cm2 gas flow proportional (MHV connector)

Detects

alpha, beta

Hand probe for alpha and beta surface contamination.

Probe for the ASP-2 and ASP-2e ratemeters (up to 1900 V).

Eberline HP-190A Now Thermo Fisher Scientific

Detector

End window GM detector (BNC)

Detects

beta

Hand probe for beta surface contamination.

Probe for the ASP-2 and ASP-2e ratemeters (up to 900 V).

Eberline HP-210 Now Thermo Fisher Scientific

Detector

pancake Geiger-Mueller detector; thin mica window 1.4 to 2.0 mg/cm2 protected by a stainless steel screen; power supply 900 +/- 50 V

Detects

alpha and beta

Hand probe for daily contamination surveys of personnel, tables, floors and equipment.

Useful beta sensitivity down to 40 keV, alpha sensitive above 3 MeV; HP-210T adds tungsten shielding for beta in gamma fields.

Eberline HP-220A Now Thermo Fisher Scientific

Detector

Shielded/directional GM detector (BNC)

Detects

gamma

Shielded, directional gamma probe.

Probe for the ASP-2 and ASP-2e ratemeters (up to 600 V).

Eberline HP-260 Now Thermo Fisher Scientific

Detector

pancake GM tube with thin mica window 1.4 to 2.0 mg/cm2, screen 79% open; active area 15.5 cm2; operating voltage 900 +/- 50 Vdc

Detects

alpha, beta, gamma

Hand probe for contamination surveys; background sensitivity about 3600 cpm per mR/hr (Cs-137).

Same detector specification as the HP-360, which differs only in its housing.

Eberline HP-330 Now Thermo Fisher Scientific

Detector

Sealed gas proportional detector (MHV connector)

Detects

alpha, beta

Hand probe for alpha and beta surface contamination without a gas bottle.

Probe for the ASP-2 and ASP-2e ratemeters (up to 1800 V).

Eberline HP-340 Now Thermo Fisher Scientific

Detector

Alpha/Beta scintillator (MHV connector)

Detects

alpha, beta

Hand probe for alpha and beta surface contamination.

Probe for the ASP-2 and ASP-2e ratemeters (up to 1000 V).

Eberline HP-350 Now Thermo Fisher Scientific

Detector

Alpha scintillator (MHV connector)

Detects

alpha

Hand probe for alpha surface contamination.

Probe for the ASP-2 and ASP-2e ratemeters (up to 1500 V).

Eberline HP-360 Now Thermo Fisher Scientific

Detector

Pancake GM detector (BNC)

Detects

beta

Pancake GM hand probe for contamination surveys.

Probe for the ASP-2 and ASP-2e ratemeters (up to 900 V).

Eberline HP-370 Now Thermo Fisher Scientific

Detector

Pancake low energy gamma detector (MHV connector)

Detects

low energy gamma

Hand probe for low-energy gamma emitters.

Probe for the ASP-2 and ASP-2e ratemeters.

Eberline HP-380A Now Thermo Fisher Scientific

Detector

100 cm2 alpha scintillator (MHV connector)

Detects

alpha

100 cm2 hand probe for alpha surface contamination.

Probe for the ASP-2 and ASP-2e ratemeters.

Eberline HP-380AB Now Thermo Fisher Scientific

Detector

100 cm2 alpha/beta scintillator (MHV connector)

Detects

alpha, beta

100 cm2 hand probe for alpha and beta surface contamination.

Probe for the ASP-2 and ASP-2e ratemeters (up to 1000 V).

Eberline LEG-1 Now Thermo Fisher Scientific

Detector

Low energy gamma scintillator, 1 in. dia x 0.04 in. thick NaI crystal (CP-1 connector)

Detects

low energy gamma

Probe for low-energy gamma and X-rays.

Probe for the ASP-2 and ASP-2e ratemeters (up to 1500 V).

Eberline PG-2 Now Thermo Fisher Scientific

Detector

Low energy gamma/X-ray scintillator, 2 in. dia x 0.08 in. thick NaI crystal (CP-1 connector)

Detects

gamma, X-ray (low energy)

Probe for low-energy gamma and X-ray emitters.

Probe for the ASP-2 and ASP-2e ratemeters (up to 1300 V).

Eberline RM-14 Now Thermo Fisher Scientific

Detector

None built in; BNC detector input with 900 V high voltage, made primarily for a Geiger-Mueller (G-M) detector (scintillation detectors with modification)

Detects

as the attached detector; primarily G-M

Range

0-500 cpm meter scale with X1, X10, X100 multipliers (500; 5000; 50,000 cpm full scale)

Read out a G-M probe as a count rate with audible clicks and an adjustable locking alarm.

AC line or internal 6 V gel battery (about 50 hours); fast/slow response switch; recorder and scaler outputs.

Eberline RM-20 Now Thermo Fisher Scientific

Detector

None built in; charge-sensitive input and variable high voltage (0 to 2.5 kV scale) for Geiger-Mueller, scintillation and proportional detectors

Detects

as the attached detector (GM, scintillation, proportional)

Range

RM-20-1: 0-500, 0-5k, 0-50k, 0-500k cpm; RM-20-5: 0-10, 0-100, 0-1k, 0-10k cps

Read out a contamination probe as a count rate with audible clicks and an adjustable locking alarm.

RM-20 series units are identical except meter face; AC powered, optional internal 12 V battery; RM-25 later replaced it.

Eberline RM-25 Now Thermo Fisher Scientific

Detector

None built in; accepts Eberline GM, gas proportional and scintillation detectors, 500 to 2500 VDC, MHV connector

Detects

as the attached detector (GM, gas proportional, scintillator/PM tube)

Range

Analog meter marked 0 to 500 linearly; range multipliers x1, x10, x100, x1K

Frisker station: reads a contamination probe as a count rate with audible counts and alarm.

Enhanced RM-14/RM-20 replacement; setup and calibration by PC (WinRM25); 110-130 VAC or 12-14 VDC.

Eberline SPA-1A Now Thermo Fisher Scientific

Detector

Alpha scintillator, 1 in. diameter zinc sulfide element (MHV connector)

Detects

alpha

Alpha scintillator for particulate filters and swipe samples.

Probe for the ASP-2 and ASP-2e ratemeters (up to 1400 V).

Eberline SPA-3 Now Thermo Fisher Scientific

Detector

High sensitivity gamma scintillator, 2 in. dia x 2 in. NaI crystal (CP-1 connector; SPA-3MHV has MHV)

Detects

gamma

High sensitivity gamma scintillation probe.

Probe for the ASP-2 and ASP-2e ratemeters (up to 1600 V).

Eberline SPA-6 Now Thermo Fisher Scientific

Detector

Medium sensitivity gamma scintillator, 2 in. dia x 2.4 in. plastic element (MHV connector)

Detects

gamma

Medium sensitivity gamma probe.

Probe for the ASP-2 and ASP-2e ratemeters (up to 1600 V).

Eberline SPA-8 Now Thermo Fisher Scientific

Detector

Gamma scintillator, 1 in. dia x 1 in. NaI crystal (MHV connector)

Detects

gamma

General gamma scintillation probe.

Probe for the ASP-2 and ASP-2e ratemeters (up to 1500 V).

Eberline SPA-9 Now Thermo Fisher Scientific

Detector

Gamma scintillator for iodine, 2 in. dia x 0.5 in. NaI crystal (MHV connector)

Detects

gamma (iodine)

Gamma probe for radioiodine.

Probe for the ASP-2 and ASP-2e ratemeters (up to 1600 V).

Ludlum Model 3

Detector

no built-in detector; used with external GM or scintillation detectors; high voltage adjustable 400 to 1500 Vdc

Detects

alpha, beta, gamma, depending on the probe attached

Range

typically 0-200 mR/hr, or 0-500,000 cpm (4 linear ranges, x0.1, x1, x10, x100)

General purpose analog survey meter; the probe plugged in decides what it reads.

Fast (4 s) or slow (22 s) meter response; two D cells, typically more than 2000 hours.

Ludlum Model 12

Detector

no built-in detector; external GM, scintillation or proportional detectors; high voltage adjustable 400 to 2500 volts

Detects

alpha, beta, gamma, depending on the probe attached

Range

typically 0-500,000 counts/minute (CPM); multipliers x1, x10, x100, x1000

Analog ratemeter for contamination and gamma surveys; wide high voltage range lets it run gas proportional probes like the 43-68.

Input sensitivity adjustable -1 to -100 mV; fast (4 s) or slow (22 s) response.

Ludlum Model 26

Detector

pancake GM (Geiger-Mueller) detector, stainless steel screen (79% open); active window area 15.51 cm2, open 12.26 cm2

Detects

alpha, beta, gamma; energy range 16.3 keV to 1.3 MeV

Range

0.1 cps to 1.99 kcps; 1 cpm to 99.9 kcpm

One-handed frisking of people and objects for contamination.

RATE, MAX and COUNT modes (count up to 20 min); two AA batteries, about 1000 hours; Model 26-3 adds mR/hr and dpm units.

Ludlum Model 43-1

Detector

ZnS(Ag) scintillator on a 3.8 cm (1.5 in.) magnetically shielded photomultiplier tube; window 1.2 mg/cm2 metalized polyester (1.3 mg/cm2 recommended for outdoor use); 83 cm2 active, 75 cm2 open area; operating voltage typically 500 to 1200 V

Detects

alpha only

Range

efficiency 33% for 239Pu (4 pi); background 3 cpm or less; uniformity within 10% of average reading

Large-area alpha probe for surface contamination surveys and smear counting with a ratemeter or scaler.

Part number 47-1516. Series C connector; 12.2 x 24.9 cm (Dia x L); 0.9 kg (2 lb). The Model 180-16 wide diameter sample holder (up to 10.2 cm / 4 in. samples) is an option. The 43-1-1 variant is an alpha-beta detector covered by the same manual (Jan 2010, combined 43-1 and 43-1-1).

Ludlum Model 43-5

Detector

ZnS(Ag) scintillator, window typically 0.8 mg/cm2 metalized polyester; active area 79 cm2 (open 52 cm2); 38 mm photomultiplier tube

Detects

alpha

Alpha-only survey probe for surfaces; efficiency 13% (4pi) for Pu-239, background 3 cpm or less.

Operating voltage typically 500 to 1200 V; used with general purpose ratemeters and scalers.

Ludlum Model 43-37 (and 43-37-1)

Detector

gas proportional, P-10 (10% methane, 90% argon) recommended; 43-37: 584 cm2 (90.5 in2) active, 434 cm2 open, 2.5 x 15.9 x 46.4 cm; 43-37-1: 821 cm2 (127 in2) active, 609 cm2 open, 2.5 x 15.9 x 64.1 cm; windows of 0.8 mg/cm2 aluminized Mylar (0.4, 3.9 or 7.9 mg/cm2 available on the 239-1F); operating voltage alpha typically 1000 to 1200 V (43-37-1: 1100 to 1400 V), beta-gamma typically 1600 to 1800 V (43-37-1: 1700 to 1800 V)

Detects

alpha and beta (gamma under 1%)

Range

43-37-1 typical efficiency: gross counting 20% 239Pu, 30% 99Tc, 30% 90Sr/90Y; alpha-beta counting 17.5% 239Pu, 20% 99Tc, 20% 90Sr/90Y; background alpha under 10 cpm, beta-gamma 1000 to 1800 cpm in a 10 µR/hr field; threshold typically 2 to 4 mV (43-37-1: 4 mV)

Large-area gas proportional probe that rides on the 239-1F cart to scan floors for alpha and beta contamination.

43-37 figures are from the Model 239-1F data sheet (efficiency 239Pu 17%, 90Sr/90Y 25%, gamma under 1%); 43-37-1 figures are from its own data sheet (part number 47-2243). The 239-1F manual covers the detector. 43-37-1: 2.4 kg (5.4 lb). Needs a gas bottle, regulator and counting instrument.

Ludlum Model 43-68

Detector

rechargeable gas proportional detector, P-10 counting gas; window typically 0.8 mg/cm2 metalized polyester; active area 126 cm2 (open 100 cm2)

Detects

alpha and beta (less than 1% gamma)

Large-area alpha/beta contamination probe run on P-10 gas with a ratemeter or the Model 2360.

4pi efficiency Pu-239 20%, Sr-90/Y-90 20%; alpha plateau typically 1100-1400 V, beta-gamma 1600-1800 V.

Ludlum Model 43-89

Detector

ZnS(Ag) adhered to 0.25 mm plastic scintillator; window 1.2 mg/cm2 metallized polyester; active area approx. 125 cm2 (open approx. 100 cm2)

Detects

simultaneous alpha and beta

Large-area alpha and beta contamination probe for floors, tools and equipment.

4pi efficiency Pu-239 17.5%, Tc-99 15%, Sr-90/Y-90 17.5%; suggested instruments Model 2360, 3002, 3003.

Ludlum Model 43-93

Detector

ZnS(Ag) adhered to 0.25 mm plastic scintillator; window 1.2 mg/cm2 metalized polyester; active area 100 cm2 (open 88 cm2)

Detects

simultaneous alpha and beta

Alpha and beta contamination probe read separately on a dual-channel meter such as the 2360.

4pi efficiency Tc-99 15%, Sr-90/Y-90 20%, Pu-239 20%; background alpha 3 cpm or less, beta 300 cpm or less.

Ludlum Model 44-2

Detector

scintillator, 2.5 x 2.5 cm (1 x 1 in.) (diameter x thickness); 2.9 cm photomultiplier tube

Detects

gamma; recommended energy range 20 keV to 1.5 MeV

Sensitive gamma probe for finding sources and low-level gamma surveys; about 175 cpm per µR/hr (Cs-137).

Background 1800 cpm in a 10 µR/hr field; energy dependent, so not for dose measurements without correction.

Ludlum Model 44-3

Detector

2.5 cm (1 in.) diameter x 1 mm thick NaI(Tl) crystal, entry window 18.4 mg/cm2, 5 cm2 (0.8 in2) active and open area, on a 3.8 cm (1.5 in.) photomultiplier tube; operating voltage typically 500 to 1200 V

Detects

125I and other low energy gamma; recommended energy range 10 to 60 keV; energy dependent

Range

sensitivity 675 cpm per µR/hr (125I); background under 250 cpm at 10 µR/hr; efficiency 33.5% for 125I (based on 129I efficiency of 18%)

Thin crystal probe for 125I and other low energy gamma surveys, such as thyroid checks and contamination in iodine work.

Part number 47-1533. Series C connector; -20 to 50 C; 5.1 x 17.8 cm (Dia x L); 0.5 kg (1 lb). Model 180-1, 180-1L and 180-24 sample holders are options.

Ludlum Model 44-7

Detector

end window halogen-quenched GM; 2.0 +/- 0.3 mg/cm2 mica window; 6 cm2 (0.93 in2) active, 5 cm2 (0.78 in2) open; operating voltage 900 V

Detects

alpha, beta, gamma; energy dependent

Range

efficiency (4 pi) 14C 2%, 90Sr/90Y 10%, 99Tc 6%, 239Pu 7%, 125I 0.1%; sensitivity about 2100 cpm per mR/hr (137Cs); background 40 cpm; dead time about 200 microseconds

Small-window GM probe for alpha, beta and gamma contamination surveys and counting wipes or planchets.

Part number 47-1536. Series C connector; -15 to 50 C (certifiable -40 to 65 C); 4.6 x 14.7 cm (Dia x L); 0.5 kg (1 lb). Model 180-4 sample holder is an option.

Ludlum Model 44-9

Detector

pancake-type, halogen-quenched GM; mica window 2.0 +/- 0.3 mg/cm2; active window area 15.51 cm2 (open 12.26 cm2)

Detects

alpha, beta, gamma

Standard hand probe for frisking and contamination surveys; 3300 cpm per mR/hr (Cs-137 gamma).

Typical 4pi efficiency 22% Sr-90/Y-90, 5% C-14; operates at 900 Vdc; optional dose filter flattens energy response.

Ludlum Model 44-10

Detector

5.1 x 5.1 cm (2 x 2 in.) NaI scintillator on a 5.1 cm (2 in.) magnetically shielded photomultiplier tube; operating voltage 500 to 1200 V; IP65

Detects

gamma; recommended energy range 30 keV to 3.0 MeV (manual: high-energy gamma 60 keV to 2 MeV); energy dependent

Range

sensitivity typically 900 cpm per µR/hr (137Cs); background 9750 cpm in a 10 µR/hr field; efficiency 125I 4%, 57Co 20%, 137Cs 9%, 60Co 15%

Probe that makes a ratemeter or scaler a sensitive low-level gamma survey and sample counting instrument.

Part number 47-1540. Series C connector; -20 to 50 C (certifiable -40 to 65 C); 6.6 x 27.9 cm (Dia x L); 1.0 kg (2.3 lb). Model 180-7 and 180-9 sample holders (180-9 has 3.81 cm lead housing) are options.

Ludlum Model 177

Detector

none built in; takes GM or scintillation detectors (high voltage adjustable 400 to 1500 V, input sensitivity adjustable -10 to -100 mV)

Detects

depends on the detector connected (GM or scintillation)

Range

4 ranges (x1, x10, x100, x1k) on a 0 to 500 cpm linear analog meter dial, so 0 to 500,000 cpm full scale; linearity within 5% of full scale; adjustable alarm 0 to 150% of full scale (latching as shipped); response fast 2.2 s or slow 22 s to 90% of full scale

Line-powered benchtop ratemeter with an alarm that is set up as a frisking station with a pancake or scintillation probe.

Part number 48-1632. 6 V sealed lead-acid battery built in, about 50 h without alarm; 95 to 250 Vac wall adaptor; recorder, pulse and alarm outputs on a 9-pin D connector; 1.9 kg (4.2 lb); 12.7 x 20.3 x 15.2 cm (H x W x L). Other versions exist (177-50, 177-56, 177-61).

Ludlum Model 239-1F

Detector

Model 43-37 (584 cm2 active) or 43-37-1 (821 cm2 active) gas proportional detector on a roll-around cart; P-10 gas; window 0.8 mg/cm2 aluminized Mylar (0.4, 3.9 or 7.9 available); detector height adjustable 0.32 to 7.6 cm (0.125 to 3 in.); operating voltage alpha typically 1000 to 1200 V, beta-gamma 1600 to 1800 V; threshold typically 2 to 4 mV

Detects

alpha, beta (gamma under 1%); gas proportional, floor contamination

Range

efficiency (4 pi) 239Pu 17%, 90Sr/90Y 25%, gamma <1%; gas flow 0 to 100 cc/min, typically 50 cc/min; operates on static charge for 2 hours

Cart-mounted floor scanner used with a survey meter and gas bottle to find alpha and beta contamination on floors.

Needs a counting gas bottle, regulator and survey meter (data sheet lists the Models 3002, 3003, 12, 2350-1 and 2360 as configurations). Cart 106.7 x 40.6 x 69.9 cm (H x W x L) without detector; 11.4 kg (25 lb) without gas bottle and meter. The 2010 manual quotes older specs (e.g. 35 cc/min, 20 lb).

Ludlum Model 2224-1

Detector

none built in; takes proportional and dual phosphor scintillation detectors; high voltage adjustable 400 to 2000 V

Detects

simultaneous but separate alpha and beta counting with alpha/beta audio discrimination (front switch selects alpha, beta, or alpha plus beta)

Range

analog meter 0 to 500 cpm with x1, x10, x100, x1000 multipliers; 6-digit LCD scaler; count time 0.1, 0.5, 1 or 2 min; linearity within 10% of true value; response typically 2 to 11 s from 10% to 90%

Portable alpha-beta ratemeter and scaler used with a gas proportional or phoswich probe for contamination surveys and smear counting.

Part number 48-2679. 2 D cells, over 350 h with alkaline; overload indicator; 1.6 kg (3.5 lb); 16.5 x 8.9 x 21.6 cm (H x W x D) with handle.

Ludlum Model 2241-2

Detector

no built-in detector; stores settings for two external detectors (DET1/DET2 switch)

Detects

alpha, beta, gamma, depending on the probe attached

Range

auto-ranging 0.0 µR/hr to 9999 R/hr; 0.000 µSv/h to 9999 Sv/h; 0 C/m to 999 C/m; 0 C/s to 100 kC/s

Digital ratemeter and scaler; swap between a pancake GM and a gamma scintillator without recalibrating.

Ratemeter or scaler mode (1 to 9999 s); two D cells, typically 200 hours; 2241-2RK kit adds a 44-9 and 44-2.

Ludlum Model 2360

Detector

no built-in detector; suggested detectors are dual phosphor scintillation and gas proportional probes

Detects

simultaneous alpha and beta

Range

meter dial 0-500 cpm; range multipliers x1, x10, x100, x1000; 6-digit scaler, count times 0.1 to 60 minutes

Counts alpha and beta together from one probe, with logged results for contamination surveys and smear counting.

Stores 550 data points; RS-232 port; six separate alarms; typical battery life 250 hours.

Ludlum Model 2401-P

Detector

integral pancake GM with stainless steel protective screen (79% open); window area 15.51 cm2 (2.4 in2) active, 12.26 cm2 (1.9 in2) open

Detects

alpha, beta, gamma; energy dependent (pancake over-responds to gamma between 20 and 150 keV; the 2401-P DOSE variant adds a sliding filter flat within 20% of 137Cs from 20 keV to 1.2 MeV)

Range

3 ranges (x1, x10, x100); default dial 0 to 6.6 kcpm and 0 to 2 mR/hr (other meter faces available, e.g. 0 to 500 cpm, 0 to 10 cps / 0 to 1.9 µSv/h); sensitivity about 3300 cpm per mR/hr (137Cs); efficiency 14C 5%, 90Sr/90Y 22%, 99Tc 19%, 99mTc <1%, 32P 32%, 239Pu 15%; response about 11 s from 10% to 90%

Pocket-size pancake frisker and contamination survey meter for personnel and surface checks.

Part number 48-2875. No alarm. 9 V battery, about 250 h with alkaline; 4.6 x 8.4 x 13.5 cm; 0.4 kg (0.9 lb) with battery; click-per-event audio can be switched off (QUIET). The technical manual also covers the 2401-EC, 2401-EW and 2401-EC2.

Mirion RDS-80

Detector

end window GM tube, 1.5 - 2 mg/cm2 mica window, active surface area 15.2 cm2

Detects

alpha >2 MeV, beta Emax >100 keV, gamma and X-rays 5 keV to 3 MeV

Range

surface contamination 1 to 100 000 cps or 0.01 to 1 000 000 Bq/cm2

Handheld pancake-style contamination meter that reads cps or Bq/cm2.

Histogram of 480 points; IrDA port with RDS-CSW software; 2 AA batteries, at least 2000 hours.

Thermo Scientific RadEye B20

Detector

1 pancake GM tube, window diameter 44 mm (1.7 in.), 1.8 - 2.0 mg/cm2

Detects

alpha, beta, gamma and X-ray

Range

contamination 0 - 10 kcps (B20), 0 - 500 kcps (B20-ER); dose rate 0.2 µSv/h - 2 mSv/h (B20), 0.2 µSv/h - 100 mSv/h (B20-ER)

Pocket frisker and survey meter; scaler, ratemeter and dose rate modes.

Energy range 17 keV - 3 MeV with optional filters; optional alpha blocker separates alpha from beta; 300 g, 2 AAA batteries.

Bicron Micro-Analyst Now Thermo Fisher Scientific

Detector

Internally mounted 1 x 1 in. NaI scintillator

Detects

gamma, X-ray

Range

0 - 5000 µR/h in four linear ranges (x1, x10, x100, x1000)

Low-level gamma survey in µR/h; SCA mode reads only a chosen energy window to cut background.

Accuracy within 10% of reading (20 to 100% of full scale); reads µR/h based on Cs-137; 9 V battery.

Bicron Micro Rem Now Thermo Fisher Scientific

Detector

Internally mounted tissue-equivalent organic scintillator (sensitive area extends outside the case with the Extended Detector option)

Detects

gamma and X-ray, 40 keV to 1.3 MeV (17 keV to 1.3 MeV with Low Energy option)

Range

Meter scale 0-200 µrem/h; five ranges X0.1 0-20, X1 0-200, X10 0-2000, X100 0-20,000, X1000 0-200,000 µrem/h (Micro Sievert model 0-0.2 to 0-2000 µSv/h)

Read low-level gamma dose rate directly in rem, with no mR/h conversion.

Micro Sievert model reads µSv/h; eight part numbers (standard or extended probe, standard or low energy); two 9 V batteries.

Bicron RSO-5 Now Thermo Fisher Scientific

Detector

Air-filled ionization chamber vented to atmosphere through silica gel desiccant, approx. 200 cm3, 200 mg/cm2 phenolic; 7 mg/cm2 mylar window; sliding beta shield 400 mg/cm2 phenolic

Detects

beta, gamma and X-ray

Range

0-5000 mR/h in 4 linear ranges (5, 50, 500, 5000 mR/h)

Survey gamma and X-ray exposure rate, and beta with the shield open, in plant areas.

Harshaw/Bicron, Saint-Gobain; one 9 V battery; collection potential self-test; energy response +/-20%, 12 keV to 7 MeV.

Bicron RSO-50 Now Thermo Fisher Scientific

Detector

Air-filled ionization chamber vented to atmosphere through silica gel desiccant, approx. 200 cm3, 200 mg/cm2 phenolic; 7 mg/cm2 mylar window; sliding beta shield 400 mg/cm2 phenolic

Detects

beta, gamma and X-ray

Range

0-50 R/h in 4 linear ranges (50 R/h, 5 R/h, 500 mR/h, 50 mR/h)

Survey higher gamma and X-ray exposure rates than the RSO-5 reaches.

High-range counterpart of the RSO-5; one 9 V battery; collection potential 30 V from ten energy cells.

Canberra ADM-300 series (ADM-300, ADM-300S, ADM-300SI, ADM-300SIS; successor ADM300A(V1B)) Now Mirion Technologies

Detector

two internal GM tubes (low range for gamma and beta, high range for gamma only); low range tube has a 2-3 mg/cm2 end window for beta; optional external smart probes (alpha/beta, gamma, neutron, X-ray)

Detects

gamma 80 keV to 3 MeV; beta above 200 keV (shield open); alpha, beta, gamma, neutron and X-ray with optional smart probes

Range

ADM-300: gamma and dose rate 10 µR/h to 10,000 R/h (0.1 µSv/h to 100 Sv/h); beta 10 µR/h to 5 R/h (0.1 µSv/h to 0.05 Sv/h); dose 10 µR to 1,000 R (0.1 µSv to 10 Sv); will not saturate in fields up to 100,000 R/h (1,000 Sv/h); accuracy +/-10% of reading. ADM300A(V1B): 0.01 µSv/h to 100 Sv/h gamma, beta 0.01 µSv/h to 50 mSv/h, dose 0.01 µSv to 100 Sv, +/-15%

Rugged handheld meter that reads both accident-level gamma fields and beta dose rate with analog and digital displays, and takes smart probes for alpha, beta and neutron work.

ADM-300: 101.6 x 44.5 x 190.5 mm (4 x 1.75 x 7.5 in.), 1.17 kg (2.6 lb), 100 h battery life in a 10 R/h field, RS-232, stores 100 data points. ADM300A(V1B): four AA batteries, 200 h typical, USB and RS-232, GPS support, data logging, MIL-STD-810 shock and vibration, splash proof. Probes (ABP-100, BP-100 pancake, BGP-100, XP-100 and others) connect with the KC-100 coil cord.

Eberline E-520 Now Thermo Fisher Scientific

Detector

Two GM tubes. A small internal tube with a low energy compensation shield handles the highest range. A tube in the hand probe handles the four lower ranges. Recommended probe is the HP-270: thin wall (30 mg/cm2) halogen quenched GM tube in an ABS housing with a sliding beta shield and an energy compensating shield, about 3 ft (0.91 m) cable. HP-190A, HP-210 and HP-260 probes are also compatible.

Detects

Gamma and beta. Beta and gamma are discriminated with the probe shield: mR/h reads on the meter with the shield closed, counts per minute with the shield open.

Range

Five linear ranges, full scale 0.2, 2.0, 20, 200 and 2000 mR/h. Range switch: OFF, BATT, X.01, X0.1, X1, X10, X100. Variable response time, about 2 to 10 seconds to 90% of final reading. Meter stays at full scale on all ranges in fields above 1000 R/h.

Rugged GM survey meter for general beta/gamma dose rate surveys, with the probe on the low ranges and the internal tube for high fields.

Two D cells. Splashproof (O-ring seals). About 2 kg with batteries and HP-270 probe; about 10.2 x 20.3 x 18.7 cm (4 x 8 x 7 3/8 in) with handle. Phone output gives one negative pulse (about 2.5 V) per count; SK-1 speaker is an accessory.

Eberline HP-270 Now Thermo Fisher Scientific

Detector

Energy compensated GM detector (BNC)

Detects

gamma

Range

0 - 3 R/Hr

Probe for gamma exposure rate measurement.

Probe for the ASP-2 and ASP-2e ratemeters (up to 900 V).

Eberline HP-290 Now Thermo Fisher Scientific

Detector

Energy compensated GM detector (BNC)

Detects

gamma

Range

0 - 80 R/Hr

Probe for higher gamma exposure rates.

Probe for the ASP-2 and ASP-2e ratemeters (up to 550 V).

Eberline RO-2 Now Thermo Fisher Scientific

Detector

Air-filled ionization chamber vented to atmospheric pressure, 3 in. (7.62 cm) diameter, 208 cm3; 200 mg/cm2 phenolic wall inside 0.05 in. aluminum case; 7 mg/cm2 Mylar window; sliding beta shield 400 mg/cm2

Detects

beta, gamma, X-ray

Range

0-5, 0-50, 0-500, 0-5000 mR/h (four linear ranges)

Survey gamma and X-ray exposure rate and beta dose rate in plant areas; calibrated to Cs-137 gamma.

Slide shield open for beta; three 9 V batteries; energy response +/-20%, 12 keV to 7 MeV.

Eberline RO-2A Now Thermo Fisher Scientific

Detector

Air-filled ionization chamber vented to atmospheric pressure, 3 in. (7.6 cm) diameter, 208 cm3; 200 mg/cm2 phenolic walls inside 0.05 in. aluminum case; 7 mg/cm2 Mylar window; sliding beta shield 400 mg/cm2

Detects

beta, gamma, X-ray

Range

0-50, 0-500 mR/h, 0-5, 0-50 R/h (four linear ranges, 50 mR/h to 50 R/h full scale)

Survey higher gamma and X-ray exposure rates and beta dose rate than the RO-2 reaches.

Higher-range version of the RO-2; four 9 V batteries.

Eberline RO-3B (RO-3 series) Now Thermo Fisher Scientific

Detector

Air-filled ion chamber in the barrel: cylinder 7.6 cm (3 in.) diameter x 10 cm (4 in.) long, volume 465 cm3. Chamber wall and removable beta shield about 400 mg/cm2 (phenolic resin). Beta window 7 mg/cm2 aluminized polycarbonate. (Figures are for the RO-3B.)

Detects

With the beta shield in place: photons above about 10 keV and beta above about 1 MeV. Does not respond to alpha or neutrons.

Range

RO-3B: four linear ranges 0 to 5, 0 to 50, 0 to 500 and 0 to 5,000 mR/h. Response 10% to 90% in under 5 s on the two lower ranges and under 3 s on the two upper ranges.

The standard cutie pie for beta/gamma dose rate surveys, with the beta shield used to separate penetrating dose from shallow dose.

Figures are for the RO-3B, which PNNL describes as the RO-3 with the range switching order reversed. 1.6 kg (3.5 lb); 28 x 25 x 9.4 cm (11 x 9.8 x 3.7 in) with handle. Battery check positions BAT 1, 2 and 3; ZERO position and zero knob.

Eberline RO-20 Now Thermo Fisher Scientific

Detector

Air-filled ionization chamber vented to atmospheric pressure, 2.84 in. (7.21 cm) inside diameter, 13.4 in3 (220 cm3); conductive plastic wall, about 1000 mg/cm2 total; two-layer Mylar window about 7 mg/cm2; sliding beta shield about 1000 mg/cm2

Detects

beta, gamma, X-ray

Range

0-5, 0-50, 0-500 mR/h and 0-5, 0-50 R/h (five linear ranges)

Survey X-ray and gamma exposure rate (and beta with slide open) in plant areas; calibrated to Cs-137 gamma.

Five ranges (the RO-2 has four); back-lit meter; five C cells plus 30 V chamber bias cells. Discontinued by Thermo; the RO-20 AA is the AA-cell version.

Eberline RO-20 AA Now Thermo Fisher Scientific

Detector

Air ionization chamber, 220 cm3 (7.21 cm diameter), vented to atmosphere; about 7 mg/cm2 Mylar window with sliding beta shield

Detects

beta, gamma, X-ray

Range

Five linear ranges: 0-5, 0-50, 0-500 mR/h and 0-5, 0-50 R/h

Exposure rate survey from low mR/h to 50 R/h; open the beta shield to read beta dose rate.

AA-cell version of the RO-20; calibrated to Cs-137; reads about 8% of true neutron field (PuBe); 5 s response.

Ludlum Model 9-3

Detector

air ionization chamber, 220 cm3 (13.4 in3); window 7 mg/cm2 metalized polyester; retractable 1000 mg/cm2 beta shield

Detects

beta and gamma (gamma to 6 keV with slide open)

Range

typically 0.2 - 50000 mR/hr (5 ranges x1 to x10k)

Beta-gamma dose rate meter for higher fields; slide open reads beta plus gamma, slide closed reads gamma only.

Energy response within 20% from 40 keV to 2 MeV; two AA batteries.

Ludlum Model 9DP

Detector

230 cc (14 in3) chamber pressurized to 9 atm (117 psig +/- 5 psig); chamber wall 601.7 mg/cm2, can wall 332.5 mg/cm2, total 934.2 mg/cm2

Detects

gamma and X-rays above 25 keV; beta above 1 MeV; energy response +/-25% from 60 keV to 1.25 MeV

Range

background to 50 mSv/h (5 R/hr); auto-ranging; minimum display 0.01 µSv/h (0.1 µR/hr); accuracy +/-10%; response 7 s in the lowest range to under 2 s in the highest (10 to 90%); drift under 0.3 µSv/h (0.03 mR/hr); geotropism under 1%

Handheld exposure rate meter for low-level and general gamma surveys, with simultaneous integrated or peak reading and data logging.

Part number 48-3742. Reads in R, Sv, Gy or rem units; 8 rechargeable AA NiMH, about 12 to 30 h; color LCD; two alarm levels; USB logging to CSV; 1.5 kg (3.3 lb); 21.9 x 11.6 x 24.5 cm (H x W x L); -20 to 40 C. Treated as HAZMAT for shipping. The Model 9DP* is the version that measures ambient dose equivalent H*(10); the manual covers both.

Ludlum Model 14C

Detector

internal energy compensated GM, used on x1000 scale only; external GM or scintillation detector for x0.1 to x100 scales

Detects

alpha, beta, gamma (probe dependent); internal tube reads gamma

Range

internal GM 0-20 mSv/h (0-2000 mR/hr); external detector ranges x0.1, x1, x10, x100

Survey meter that also has a built-in high-range gamma tube so the needle pins in very high fields.

Internal detector energy response within 15% from 60 keV to 3 MeV; set for 900 V GM operation.

Ludlum Model 19

Detector

internal 2.5 x 2.5 cm (1 x 1 in.) NaI(Tl) scintillator

Detects

gamma (low-level)

Range

0 - 5000 µR/hr (ranges 0-25, 0-50, 0-250, 0-500, 0-5000 µR/hr)

Finds and measures near-background gamma levels; sensitivity about 175 cpm per µR/hr (Cs-137).

Energy response is nonlinear, so dose and exposure readings can be over or under reported.

Ludlum Model 44-38

Detector

50 mg/cm2 stainless steel wall halogen-quenched GM with a rotary beta window (low-energy blocking 1368 mg/cm2 total, pass-through 667 mg/cm2 total); operating voltage typically 900 V

Detects

beta and gamma; gamma response with window closed within 20% of 137Cs (662 keV) from 60 keV to 1.3 MeV (exposure and H*(10))

Range

without DTC 0.5 to 500 µSv/h (0.05 to 50 mR/hr); with DTC 0.5 µSv/h to 5 mSv/h (0.05 to 500 mR/hr); with SCC 0.5 µSv/h to 20 mSv/h (0.05 mR/hr to 2 R/hr); sensitivity 120 cpm per µSv/h (1200 cpm per mR/hr, 137Cs, window closed); background 20 cpm closed, 25 cpm open; dead time about 95 microseconds

Probe that gives a gamma dose rate reading with the window closed and shows the beta contribution with it open.

Part number 47-1588. DTC (dead time correction) and SCC (series correction constant) are available on some instruments only. Series C connector; -20 to 50 C; 3.3 x 16.5 cm (Dia x L); 0.5 kg (1 lb).

Mirion Colibri TTC

Detector

energy compensated Geiger-Mueller tube combined with the TTC (Time-To-Count) algorithm, measuring H*(10); external CSP probes (up to eight wired) for other radiation

Detects

gamma 58 keV to 1.5 MeV; alpha, beta, X-ray and neutron with external CSP probes

Range

0.05 µSv/h to 10 Sv/h (5 µrem/h to 1000 rem/h); effective range per IEC 60846: 0.3 µSv/h to 10 Sv/h; sensitivity 0.75 c/s per µSv/h (Cs-137)

Handheld wide range H*(10) survey meter and ALARA data platform that maps dose rate with GPS or barcode locations and runs external probes for contamination and neutron work.

Specs from the Slovak Metrology Institute type approval certificate (2023). TTC basic: 195 x 100 x 63 mm, 700 g with battery, -10 to +50 C, IP67, rechargeable Li-ion. TTC-GPS version: 630 g, -20 to +50 C. The red-gasket Colibri VLD is the low range version (10 nSv/h to 1 mSv/h). Color touch screen; Bluetooth to probes through the CSP-COM module. Formerly Canberra Colibri; an SN-D-2/C neutron probe version exists.

Mirion Radiagem 2000

Detects

H*(10) ambient dose equivalent; external probes for remote dose rate and surface contamination measurements

Range

H*(10) ambient dose equivalent rate up to 100 mSv/h (10 rem/h)

Handheld dose rate meter with a backlit analog bar graph and digital display that takes external probes for remote dose rate and contamination surveys.

Visual and audible alarms on dose rate and integrated dose; date stamped data logging (1000 points in probe memory and 1000 in the Radiagem); scaler/timer mode; waterproof and easy to decontaminate. Runs the Tele-STTC wide range telescoping probe and the SN-D-2/R2000 neutron probe.

Mirion RAM ION

Detector

ion chamber

Detects

gamma, X-ray and beta

Range

dose rate 0.1 mR/h to 50 R/h (1 µSv/h - 500 mSv/h); integrated dose 1 µR to 1000 R (0.01 µSv - 10 Sv)

Ion chamber dose rate and dose meter with analog bar graph and alarms.

Mirion RDS-31

Detector

one energy compensated GM tube, response according to ambient dose equivalent H*(10); external alpha, beta and gamma probes can be connected

Detects

gamma and X-rays, 48 keV to 3 MeV; alpha and beta with external probes

Range

dose rate 0.01 µSv/h to 0.1 Sv/h (1 µrem/h to 10 rem/h); dose 0.01 µSv to 10 Sv

Handheld H*(10) dose rate meter that doubles as a contamination meter with probes.

IP67; complies with ANSI N42.33 and IEC 60846; 2 AA batteries; 220 g with batteries.

Mirion RDS-32

Detector

one energy compensated GM tube; WR versions add an energy compensated Si diode, taking over above 30 mSv/h rising and handing back below 10 mSv/h; ambient dose equivalent H*(10); external alpha, beta, gamma and neutron Smart probes (CSP, GMP-12, GMP-25) can be connected

Detects

gamma and X-rays, 48 keV to 1.8 MeV (WR: 55 keV GM / 65 keV Si diode to 1.8 MeV); alpha, beta and neutron with external probes

Range

RDS-32: 0.05 µSv/h to 100 mSv/h (5 µrem/h to 10 rem/h); RDS-32WR: 0.05 µSv/h to 10 Sv/h (5 µrem/h to 1000 rem/h); dose 0.1 µSv to 10 Sv

Handheld H*(10) dose rate meter that takes contamination, neutron and telescoping probes, with both readings on screen at once.

Successor to the RDS-31; RDS-32WR wide range and iTx (900 MHz or 2.4 GHz radio) versions; Bluetooth LE; IP67; 2 AA batteries; 210 g with batteries (WR 245 g); IEC 60846-1, WR also 60846-2.

Thermo Scientific FH 40 G

Detector

internal proportional counter tube for gamma with optional external plug-and-play probes

Detects

gamma, X-ray, beta (with probe)

Range

FH 40 G: 1 µR/h to 100 R/h, 36 keV to 1.3 MeV; FH 40 G-10: 10 nSv/h to 1 Sv/h, 30 keV to 4.4 MeV

General gamma dose rate meter; base unit for neutron (WENDI-2), gamma and contamination probes.

IP 67; 2 AA batteries; datalogging of 256 points; versions G, G-L, G-10, G-L10 and G-X (probe only).

Thermo Scientific RadEye G

Detector

energy compensated Geiger-Mueller tube

Detects

gamma

Range

50 µR/h to 10 R/h (G with Black Label); energy range 45 keV to 1.3 MeV (+/-30%)

Pocket dose rate meter for gamma surveys; G-10 versions read ambient dose equivalent H*(10) in Sv.

Sold in several versions (G, G-10, GF, Ex); ranges differ by version.

Thermo Scientific RadEye GX

Detector

external Geiger-Mueller probe on an RG 58 cable (max. 1.5 m, MHV connector), 350 to 1100 V high voltage; parameters for up to 16 probes stored (high voltage, calibration factor, dead time, overload threshold, detector area)

Detects

dependent on probe used

Range

default measuring range 10,000 cps, extendable by individual probe calibration; reads cps, cpm, Bq, dps, dpm, Bq/cm2, and dose rate in R/h, Sv/h or rem/h; the GX-L economy version is limited to 10,000 cps (600,000 cpm)

Small meter that runs a frisker or other GM probe in ratemeter, scaler/timer or dose rate mode.

From the Thermo RadEye selection guide (08/2012); catalog number 4250692 (GX-L 425069205). Sister models SX (scintillation) and PX (proportional). 110 x 67 x 62 mm with rubber protection, about 160 g with AAA cells. Operating voltage 1.8 to 4 V. Battery life over 500 h for the instrument alone (depends on probe). Working temperature -20 to +50 C. Alarm 80 dB at 30 cm. Two alarm thresholds each for count rate, activity, dose and dose rate. Stores the last 1600 mean and maximum values and a 250-entry logbook. Optional BTcom cover for Bluetooth. The dose rate range depends on the probe.

Thermo Scientific RadEye PRD

Detector

CsI(Tl); the PRD-ER4 adds a high dose rate detector

Detects

gamma and X-ray; neutron indication via prompt gamma analysis (PRD4 page)

Range

10 nSv/hr to 10 Sv/hr (1 µR/hr to 1000 R/hr); energy 58 keV to 6 MeV for the search detector

Worn or hand-held pager for finding sources and warning of dose rate.

Current generation is the PRD4 / PRD-ER4. The original PRD read up to 25 mR/h and the PRD-ER up to 10 R/h.

Victoreen 450B Now Fluke Biomedical

Detector

349 cc air ionization chamber, 200 mg/cm2 bakelite wall, 1.7 mg/cm2 mylar window (per US Army TM 1-1500-335-23)

Detects

gamma and X-ray above 7 keV; use with the cap off for energies below 200 keV

Range

five ranges, 0 to 5 mR/hr up to 0 to 50 R/hr

Handheld air ion chamber for general area gamma and X-ray exposure rate surveys.

Specs per US Army TM 1-1500-335-23, which treats the 450B and 450-CHP as similar. Two 9 V batteries, about 200 h continuous. Succeeded by the Fluke 451B (349 cc, 246 mg/cm2 phenolic wall, 6.6 mg/cm2 Mylar window, 440 mg/cm2 beta shield); its parts list still carries the 450B tube and Mylar window assembly.

Victoreen 450P Now Fluke Biomedical

Detector

300 cc ionization chamber pressurized to 6 atmospheres (per US Army TM 1-1500-335-23)

Detects

X and gamma radiation above 25 keV

Range

five ranges, top range 0 to 5 R/hr (0 to 50 mSv/h); reads exposure and exposure rate, and can freeze the maximum rate

Handheld pressurized ion chamber for exposure rate surveys.

Specs per US Army TM 1-1500-335-23. Succeeded by the Fluke 451P (125 psi pressurized chamber, gamma above 25 keV, beta above 1 MeV, 0 to 500 µR/h up to 0 to 5 R/h).

Victoreen 451B Now Fluke Biomedical

Detector

349 cc air ionization chamber; phenolic wall 246 mg/cm2; Mylar window 6.6 mg/cm2; beta slide 440 mg/cm2

Detects

alpha above 7.5 MeV, beta above 100 keV, gamma above 7 keV

Range

0 mR/h to 5 mR/h; 0 to 50 mR/h; 0 to 500 mR/h; 0 R/h to 5 R/h; 0 R/h to 50 R/h (auto-ranging)

Beta-gamma dose rate: slide open for skin dose, slide closed for deep dose.

Not pressurized; Freeze mode holds the peak rate; two 9 V batteries, 200 hours.

Victoreen 451P Now Fluke Biomedical

Detector

230 cc pressurized ionization chamber (8 atmospheres or 125 psi)

Detects

gamma above 25 keV, beta above 1 MeV

Range

0 µR/h to 500 µR/h; 0 to 5 mR/h; 0 to 50 mR/h; 0 to 500 mR/h; 0 to 5 R/h (auto-ranging)

Low-level (µR) dose rate and dose from X-ray and gamma; used for area surveys and release checks.

Pressurized chamber ships as DOT Dangerous Goods under special permit DOT-SP 13187; two 9 V batteries, 200 hours.

Automess Teletector 6112D/H (6112 series)

Detector

two energy compensated GM tubes on a telescope extendable up to 4 m: low range beta/gamma end window tube ZP1400, high range gamma tube ZP1300; beta window about 25 mg/cm2

Detects

photon (gamma and X-ray) H*(10), 80 keV to 1.3 MeV within ±45 deg of the preferential direction; the low range tube also detects beta through its end window

Range

low range 0.01 to 9900 µSv/h, high range 0.01 to 9900 mSv/h (overall 0.1 µSv/h to 10 Sv/h); dose 0.001 to 9999 mSv; accuracy and linearity better than ±10% (Cs-137); instrumental background under 0.2 µSv/h

Telescope probe for high dose rate checks at a distance, such as spent fuel and radwaste areas, with beta detection by the end window tube.

On the market since 1981; electronics redesigned in 2005 with a floating time constant (16 s to 1 s). Four C cells, 600 to 5000 h depending on backlight. Die-cast aluminium housing, 895 mm long with the telescope pushed in, about 3.3 kg with batteries. -20 to +50 C. Successors are the 6112M (graphic LCD, 65 keV to 1.3 MeV, IP67) and the 6112AD. The manual on file is for the 6112M and 6112M/H.

Automess Teletector 6150AD-T

Detector

two GM counting tubes at the telescope end: low range ZP1400 beta-gamma end window tube, high range ZP1300 (energy compensated)

Detects

photon (gamma and X-radiation); low range tube also detects beta

Range

useful range 2 µSv/h to 9.99 Sv/h; indicated analogue 0.1 µSv/h to 10 Sv/h, digital 0.00 µSv/h to 9.99 Sv/h

Reach into high fields from distance; telescope extends to about 4 m; high range tube takes over above 10 mSv/h.

Probe for the Automess 6150AD dose rate meter; the /H and /E versions read H*(10).

Eberline RO-7 Now Thermo Fisher Scientific

Detector

Hand-held LCD display unit with interchangeable ion chamber detectors on cables (up to 152.4 m / 500 ft), rigid extensions or mounted directly. RO-7-LD low range: 50 cm3 chamber, walls and window about 800 mg/cm2, no beta window. RO-7-BM mid range and RO-7-BH high range: 7 cm3 chamber, 7 mg/cm2 aluminized Mylar end window, sidewall about 800 mg/cm2, removable plastic beta cap (about 1,000 mg/cm2).

Detects

Photons and beta. Low range: photons above 50 keV. Mid and high range with beta cap on: photons above 50 keV (side-on) or 25 keV (face-on); cap off: photons above 8 keV and beta above about 200 keV.

Range

RO-7-LD: 10 mR/h to 1.999 R/h (1 mR/h resolution). RO-7-BM: 0.1 to 199.9 R/h (0.1 R/h). RO-7-BH: 10 R/h to 19.99 kR/h (10 R/h). Modified RO-7-BM-M: 10 mR/h to 19.99 R/h. Linearity +/-5% (low and mid), +/-10% (high). Response averages 2.5 s, not adjustable.

Reads very high beta and gamma fields from a distance with a probe on a cable or extension, up to 20,000 R/h.

Display unit about 24.1 x 10.2 x 24.1 cm (9.5 x 4 x 9.5 in), about 1.36 kg (3 lb). 4-digit LCD with a kR/h arrow, light switch, zero knob. Underwater housing available (cable limited to 18.3 m / 60 ft). Detectors can be permanently damaged if left in fields above 200 R/h (LD: above 2 R/h), even with the meter off. Not meant for contact dose rates. Power: three 9 V and two 30 V cells, about 160 hours on the 9 V cells (1982 LLNL evaluation).

MGP Instruments TelePole WR (Wide Range) Now Mirion Technologies

Detector

Two GM tubes: ZP-1301 (high range) and ZP-1201 (low range), switched automatically

Detects

gamma

Range

0.05 mR/h to 1000 R/h (0.5 µSv/h to 10 Sv/h)

Reads high gamma fields from a distance on an extendable pole, for hot spots and high-dose areas.

Pole extends to 11 ft (337 cm); tubes switch at 1,500 mR/h rising.

Mirion Tele-STTC-2

Detector

one energy compensated GM tube in the probe tip, run on Mirion's time-to-count method so a single tube covers the full range with no detector switching; Canberra Smart Probe (CSP) family

Detects

gamma, 36 keV to 1.5 MeV

Range

0.1 µSv/h to 10 Sv/h (10 µrem/h to 1000 rem/h)

Read high fields from up to 13.4 ft away; the survey meter clips to the pole and shows the probe's reading.

Pole 1080 mm closed, 4090 mm (13.4 ft) open; 1.7 kg without meter; IP54. Runs on the RDS-31, RDS-32, Radiagem and Colibri. Also sold as the bare STTC probe on a 1.5, 10 or 20 m cable, and the STTC-W, waterproof to 25 m.

Mirion Telepole II

Detector

internal energy compensated GM tube (ZP-1201 or equivalent); interchangeable smart external detectors (very high range, wide range, XDS, gamma-beta)

Detects

gamma and X-rays (beta with the gamma and beta wide range detector)

Range

0.05 mR/h to 1000 R/h overall; internal GM 0.1 µSv/h to 10 mSv/h (10 µR/h to 1.5 R/h)

Survey high-dose-rate or out-of-reach areas from the end of an 11 ft pole.

Pole 120 cm collapsed, 335 cm extended; LED on the head; WRM2 radio; four AA batteries, 85 hours.

Eberline HP-280 Now Thermo Fisher Scientific

Detector

Neutron sphere, 3 inch diameter (MHV connector)

Detects

neutron

3 in. moderator sphere probe for neutron dose rate.

Probe for the ASP-2 and ASP-2e ratemeters (up to 2300 V).

Eberline NRD Now Thermo Fisher Scientific

Detector

moderated He-3 tube in a 9 in. rem ball (BF3 tube version also existed)

Detects

neutron; 0.025 eV to 10 MeV

Range

1 to 10,000 mrem/h

Classic 9 in. rem ball for neutron dose rate, read on a survey meter such as the ASP-2.

The BF3 version (NRD9) is discontinued; the He-3 version is still sold. The Hanford instrument manual on file covers the NRD with the E-600.

Eberline NRD-1 Now Thermo Fisher Scientific

Detector

Neutron sphere, 9 inch diameter (MHV connector)

Detects

neutron

9 in. moderator sphere probe for neutron dose rate.

Probe for the ASP-2 and ASP-2e ratemeters (up to 2300 V).

Eberline PNR-4 Now Thermo Fisher Scientific

Detector

BF3 tube (about 0.5 in. diameter) inside a 9 in. (22.9 cm) diameter polyethylene moderator sphere, connected to the counter by a cable.

Detects

Neutrons from thermal (0.025 eV) to about 10 MeV, with response following dose equivalent.

Range

Four decades, full scale 5, 50, 500 and 5,000 mrem/h. Detector high voltage adjustable from under +300 V to at least +2500 V.

Portable neutron survey meter for dose equivalent rate around reactors, sources and storage.

From the PNR-4 Technical Manual (TD E070.0490, 1988). Counter 24.1 x 10.2 x 18.4 cm (9.5 x 4 x 7.25 in). Detector and cable 6.24 kg (13.75 lb), counter 2.61 kg (5.75 lb), total 8.85 kg (19.5 lb). BP-1-3 battery pack with five alkaline D cells.

Health Physics Instruments (Far West Technology) REM 500

Detector

sealed spherical TE proportional counter, Rossi type, 2.25 in ID; A150 conducting tissue equivalent plastic wall, 0.12 cm thick (144 mg/cm2), aluminum can; propane fill gas; optional 256-channel multichannel analyzer; internal Cm-244 source under 1 µCi

Detects

neutrons 70 keV to 20 MeV; gamma response under 1% at 1 rad/h

Range

autoranging 0.001 mrem/h to 999 rem/h and 0.001 mrad/h to 999 rad/h; integrate 0.001 mrem to 999 rem and 0.001 mrad to 999 rad; Sv and Gy selectable

Handheld neutron survey meter that reads dose equivalent directly from measured dose and quality factor, without a moderator sphere.

Specs are from the REM 500 Operations and Repair Manual, Rev A, September 1998 (Health Physics Instruments, Goleta CA). 2 line x 16 character LCD, RS-232. 12 x 4.5 x 4.5 in (6.25 in with handle), 5 lb 2 oz with batteries. Six alkaline C cells, 100 h. 15 s warm-up. Temperature dependence under ±15% from 15 to 45 C. Available with or without the MCA option.

Ludlum Model 12-4

Detector

He-3 proportional detector, 1.6 x 2.5 cm (0.6 x 1.0 in.), inside a 22.9 cm (9.0 in.) diameter cadmium loaded polyethylene sphere

Detects

neutron; thermal through 7 MeV, response up to 12 MeV

Range

0-100 mSv/h (0-10,000 mrem/hr)

Standard rem ball for neutron dose rate around reactors, sources and casks.

Sensitivity typically 10 cpm per µSv/h (bare AmBe); gamma rejection under 10 cpm through 10 R/hr; 8.3 kg.

Ludlum Model 42-5

Detector

4 mm x 4 mm LiI crystal on a 3.8 cm photomultiplier tube, with 2, 3, 5, 8, 10 and 12 in. polyethylene moderator spheres

Detects

neutron; continuous response thermal to approximately 12 MeV

Neutron fluence and dose spectrum work with interchangeable moderator spheres on a cart.

Ludlum lists 42-5 as a ball cart with detector, not one fixed rem ball; about 45 cpm per mrem/hr (AmBe, 10 in.).

Ludlum Model 42-41L

Detector

PRESCILA proton recoil scintillator; 2.9 cm photomultiplier tube

Detects

neutron; thermal to 100 MeV

Light hand-held alternative to a rem ball for neutron dose surveys, used with a Ludlum ratemeter such as the 2363.

The 42-41 is the same detector family. About 350 cpm per mrem/hr (AmBe); 2.3 kg.

Ludlum Model 2363

Detector

internal energy compensated GM for gamma; external Model 42-41L PRESCILA proton recoil scintillator for neutron (neutron voltage 500 to 1500 V adjustable, gamma fixed 550 V)

Detects

gamma 60 keV to 3 MeV (+/-15%); neutron thermal to 100 MeV with the 42-41L

Range

neutron and gamma each 1 µSv/h to 10 mSv/h (0.1 mrem/hr to 1 rem/hr); 4 linear ranges (x0.1 to x100) on a 0 to 100 µSv/h (0 to 10 mrem/hr) dial; sensitivity gamma about 100 cpm per µSv/h (1000 cpm per mR/hr), neutron about 35 cpm per µSv/h (350 cpm per mrem/hr); neutron response +/-30% from 0 to 40 C; response about 2 to 11 s

Handheld meter that reads neutron and gamma dose rate at once with a PRESCILA probe in place of a rem ball.

Part number 48-3514 (with 42-41L, data sheet Jan 2025); the 42-41L data sheet is https://ludlums.com/images/data_sheets/M42-41L.pdf. N, G or N+G selector; 1000-point data logger; RS-232 with USB cable; alarms for gamma, neutron and integrated dose; 2 D cells, about 200 h; 4.2 kg (9.2 lb) with the 42-41L, 2.0 kg (4.5 lb) without; 42-41L survives 100 g drops.

Mirion SN-D-2

Detector

3He filled tube (8 atm) with 1 mm cadmium wrap inside a 200 mm PEHD (polyethylene) moderating sphere

Detects

neutron, 0.025 eV to 15 MeV within IEC 61005:2014 tolerances; gamma rejection > 10^4

Range

0.3 µSv/h to 100 mSv/h (30 µrem/h to 10 rem/h); sensitivity 0.153 to 0.187 c/s per µSv/h (Cf-252); accuracy -17% to +25% per IEC 61005; response under 20 s from 1 to 10 µSv/h, under 10 s from 10 to 100 µSv/h, under 2 s above 100 µSv/h; background under 0.05 c/s (3.0 cpm) at 100 nGy/h or less

Remote neutron H*(10) dose rate probe used with a CSP survey meter for reactor building and used fuel cask neutron surveys.

Datasheet SPC-246-EN-B, 04/2026. Versions for Colibri (SN-D-2/C), Radiagem-2000 (SN-D-2/R2000) and RDS-32/31 (SN-D-2/RDS, adapter cable 1233-318). 200 mm sphere x 330 mm tall, under 5.9 kg (12.6 lb) without meter; IP64; -10 to +60 C; powered from the meter, +5 V, 25 mA max; dead time under 8 µs; connects with 1.5 m, 10 m or 20 m CSP cable; optional tripod; calibration via CSPS software and PC; ANSI N42.17A:2003 and IEC 61005:2014; drop tested from 30 cm.

Nuclear Research Corporation (NRC) NP-2

Detector

BF3 proportional counter, 2 in. active length, fill pressure 60 cm Hg, in a polyethylene moderator with boron-loaded attenuator

Detects

neutron, thermal (0.025 eV) to 15 MeV; no response to gamma in fields up to 500 R/h of Cs-137

Range

0-2, 0-20, 0-200, 0-2000 mrem/hr (four linear ranges)

Measure neutron dose equivalent rate in mrem/hr near reactors, accelerators and neutron sources.

Military designation AN/PDR-70; manual reissued by Canberra Industries (2003); three D cells; 25 lbs; accuracy +/-10%.

Thermo Scientific FHT 762 Wendi-2

Detector

large He-3 tube in a WENDI-2 design moderator (design originally from Los Alamos)

Detects

neutron; energy range 25 meV to 5 GeV per ICRP 74

Range

0.01 µSv/h to 100 mSv/h (Cf-252)

Neutron dose rate across thermal to high energy, plugged into an FH 40 G or FHT 6020 monitor.

Sensitivity 0.84 cps/(µSv/h) Cf-252; weight 13.5 kg; angular dependence +/-20%.

Eberline PCM-1C Now Thermo Fisher Scientific

Detector

fifteen (15) independent gas flow proportional detectors, P-10 counting gas

Detects

beta-gamma; alpha optional (3 or 15 alpha channels)

Whole body contamination check at an RCA exit: the person counts one side, turns, and counts the other.

The PCM-1B is the same family; the manual's drawings cover both. A person is counted twice, once per side.

Eberline PCM-2 Now Thermo Fisher Scientific

Detector

16 gas proportional detectors; 34 counting zones, each with separate alpha and beta/gamma channels; up to 75 sum zones

Detects

alpha, beta/gamma

Step-in monitor that checks the whole body for alpha and beta/gamma contamination and shows where on a body outline.

Optional hand-held frisking probe; two count cycles per person.

Ludlum Model 52

Detector

18 Geiger-Mueller detectors: 14 G-M pancake detectors in the frame (head and body) and 4 cylindrical G-M detectors in the base (feet)

Detects

beta, gamma (personnel contamination)

Performance

Count time adjustable 1 to 60 seconds (default 6 s); counting capacity 9999 counts per minute

Walk-in beta/gamma contamination check of a person at an exit or emergency response site.

Assembles in 5 minutes without tools; factory preset detects 1.0 µCi Cs-137 beta source in 10 µR/hr background; 120 VAC or six D cells.

Mirion Argos-5AB

Detector

25 gas flow proportional detectors (LFP-579), window multilayer aluminized Mylar at typically 0.8 mg/cm2

Detects

alpha, beta (optional gamma Zeus option, 3 plastic scintillators)

Walk-in whole body frisk of alpha/beta contamination when leaving a controlled area.

Argos-3AB is the 18 detector version, field upgradeable to 5AB. Uses P-10 style counting gas.

Mirion Argos-5PAB

Detector

25 TPS-AB-579 thin plastic scintillator detectors, window multilayer aluminized Mylar at 1.2 mg/cm2

Detects

alpha, beta (optional gamma Zeus option, 3 plastic scintillators)

Walk-in whole body alpha/beta contamination frisk with no counting gas to supply.

Argos-3PAB is the 18 detector version. Alpha and beta discrimination; same form factor as gas flow Argos-AB.

Mirion Cronos-4

Detector

six 45.7 x 45.7 x 5.1 cm plastic scintillators with PMTs, 65.1 L total detector volume; 128.7 L counting chamber; 25 mm lead on six sides (optional 50 mm)

Detects

gamma >50 keV

Performance

Time to reach MDA of 83 Bq (5000 dpm) at 80 nSv/h background, 1 in. lead: 48 s for 137Cs, 10 s for 60Co

Clears tools, bags, hard hats and other articles for release from a controlled area by gamma counting.

Built-in 100 kg scale. Single or dual door. Cronos-1 is the smaller 42.9 L unit.

Mirion Cronos-11

Detector

four 61 x 74.9 x 5.1 cm plastic scintillators (main unit) plus door scintillators, 130.5 L total detector volume; 345.5 L counting chamber; 25 mm lead on six sides

Detects

gamma >50 keV

Performance

Time to reach MDA of 83 Bq (5000 dpm) at 80 nSv/h background, 1 in. lead: 130 s for 137Cs, 22 s for 60Co

Clears larger items such as waste bags and equipment for release by gamma counting.

Same software and electronics family as Argos, GEM-5 and Sirius. Built-in 100 kg scale.

Mirion GEM-5

Detector

8 identical large plastic scintillators (3 per side, 1 top, 1 bottom), 24 sum zones; 25 mm lead on side detectors

Detects

gamma

Performance

Point source anywhere on person at 80 nGy/h background: walkthrough 830 Bq 60Co / 1850 Bq 137Cs; pause (4 s) and count 555 Bq 60Co / 830 Bq 137Cs; two-step 370 Bq 60Co (8 s) / 370 Bq 137Cs (18 s)

Screens people leaving contaminated or potentially contaminated areas for gamma-emitting contamination.

Three modes: walkthrough, pause-and-count, and two-step with a 180 degree turn. Complies with IEC 61098.

Mirion Sirius-5

Detector

six detectors, ~579 cm2 window each: LFP-579 gas flow proportional (5AB) or TPS gasless plastic scintillator (5PB/5PAB/5PBG); two moveable hand detectors

Detects

alpha/beta (AB, PAB); beta (PB); beta/gamma (PBG)

Hand, cuff and foot frisk at the exit of a contaminated area.

Gas flow window is 0.8 mg/cm2 Mylar; gasless window is 1.2 mg/cm2. Optional frisker probe.

RADOS CheckPoint:Body RTM110 Now Mirion Technologies

Detector

Either RGZ gas flow detectors (P10, P7.5 or Ar/CO2, thin Mylar foil) or RBP beta plastic scintillation detectors; hand, clothing probe and foot detectors

Detects

beta, gamma; alpha with RGZ gas detectors

Performance

MDA, RGZ gas hand detector, 5 s count: Sr-90/Y-90 10 Bq, Cl-36 15 Bq, Co-60 25 Bq, Am-241 25 Bq (5 Bq discriminated)

Walk-up monitor that counts hands, feet and clothing probe on exit from a controlled area.

Manufactured by Mirion Technologies (RADOS) GmbH. Gas version needs counting gas; warm-up about 2 h with P10.

RADOS CheckPoint:Body TwoStep-Exit Now Mirion Technologies

Detector

RADOS Fibre (RFD) detectors, BetaFibre and/or GammaFibre; head, hand/forearm, body, foot and small items detectors; 10 or 20 mm lead shielding

Detects

beta and/or gamma

Step-in body monitor that checks head, hands, body and feet for contamination before leaving a controlled area.

Split-Delta geometry housing; optional small items box and head detector. Made by Mirion Technologies (RADOS) GmbH.

RADOS CheckPoint:Waste Tool&Object-Monitor (RTM606) Now Mirion Technologies

Detector

RFD 1600G gamma plastic fibre detectors, 400 x 400 x 50 mm, 4 or 6 around an 80 litre measurement chamber; 25 or 50 mm lead shield

Detects

gamma

Release measurement of tools and objects leaving a controlled area, with optional weight cells and nuclide vectors.

Compact class of the CheckPoint:Waste family; one or two doors; 4 or 6 detector versions. Made by Mirion Technologies (RADOS) GmbH.

Thermo Scientific iPCM12

Detector

up to 24 identically sized detectors (21 standard) in four detection zones; almost 17,000 cm2 detection area; optional gamma kit with up to nine scintillators

Detects

alpha, beta (gamma with option)

Stand-in whole body, hand and foot contamination monitor; Thermo's successor to the PCM2 geometry.

Combines the PCM-2 detector geometry and IPM9 serviceability with Series 12 electronics. 660 lb open frame.

Thermo Scientific PM12

Detector

Eight large plastic scintillation detectors (NE110 equivalent), 2 in. thick, 12 x 22 in. each, around a 28 x 78 in. portal opening; 0.5 or 1 in. lead

Detects

gamma; energy response from 20 keV upwards

Walk-through portal that screens people for gamma contamination, with a statistical alarm set to a reliably detectable activity.

Variants PM12A (LCD), PM12B (no LCD), PM12C (power doors), each with 05L or 10L lead. Battery backup for 6 hours.

Thermo Scientific SAM12

Detector

Four or six large plastic scintillators (BC408), 15 x 15 x 2.25 in., around a stainless steel lined chamber; 1 or 2 in. lead shielding

Detects

gamma; energy response from 20 keV upwards

Cabinet that monitors tools, clothing, personal effects and waste for gamma contamination.

SAM12A standard; SAM12L low-energy plastic liner version. Variants set by detectors (4C/6C), doors (1D/2D), lead (1L/2L).

Eberline RAS-1 Now Thermo Fisher Scientific

Range

flow rate 0.5 to 3.5 cfm (rotameter-type flow meter); power requirement 5 amps

Pulls air through a particulate filter or iodine cartridge for lab analysis; flow is held constant by a regulator and checked on the rotameter.

Per the DOE RCT handbook, Module 2.18: screw-in particulate filter holder, clamshell iodine cartridge holder, 30 lb, grounded three-wire cord, 110 V; sample heads take 2 in (47 mm) media. Filter paper must cover the intake screen; check the flow rate after turning on and before turning off.

F&J Specialty Products DF-AB-40L

Detector

no radiation detector; dual diaphragm high efficiency pump; combination filter holders (FJ-05P, FJ-21P, FJ-35P, FJ-46P, FJ-51P, FJ-53P) take F&J Model B, C or M charcoal cartridges plus 47 mm or 2 in (50 mm) particulate filter paper; 3/8 FNPT quick disconnect fitting

Detects

Collects airborne particulate on filter paper and, with a combination holder, radioiodine on a charcoal cartridge; the sample is counted separately

Range

Flow: typical range 10 - 35 SLPM (0.3 - 1.24 SCFM); 35 LPM typical maximum with 47 mm glass fiber media (98% DOP efficiency); keypad flow control listed as adjustable 10-30 LPM; flow accuracy +/-4.0% of full scale; flow and volume corrected to a factory settable reference T and P (0 C, 20 C, 70 F or 25 C at 1 atm)

Battery powered emergency response air sampler for when line power may not be available, holding a set flow automatically as the filter loads.

Datasheet rev 04/04/2019. 13 lb (5.9 kg); 14.5 x 8 x 10 in; water tight enclosure with plastic handle. Runs from on-board 12 VDC 4500 mAh NiMH pack (about 6 h with 47 mm glass fiber filter paper), line power 100-250 VAC, vehicle cigarette lighter 12 VDC, or the F&J BATBANK-12V. Auto shut-off on time or volume, battery life indicator, 64.3 dB at 1 m, operating -10 to 50 C. DF-AB-40L-Li variant (rev 14 July 2021): 20 Ah Li-ion pack, about 18-20 h run time, 16 lb (7.3 kg). Not in the current F&J DFRV-40L emergency response catalog (rev 26 March 2025).

F&J Specialty Products HV-1

Detector

no radiation detector; two-stage, dual ball-bearing, bypass type blower with independent motor cooling (thermal overload protection); single rotameter; flow adjusted by motor speed control; removable controller module; combination filter holders FJ-19P, FJ-27P, FJ-34P, FJ-39P, FJ-52P, FJ-54P available

Detects

Collects airborne particulate (and with a combination holder radioiodine on a charcoal cartridge) for separate counting

Range

Flow: maximum capacity 94 CFM at 29.92 in Hg and 68 F (free air flow); rotameter available in various CFM and LPM scales; ultimate vacuum 80 in H2O at standard T and P with zero flow restriction

Portable high volume air sampler for moving a large air volume through a filter in a short time for area and environmental air sampling.

Catalog rev 29 March 2018, 100-120 VAC. 100-120 VAC 50/60 Hz at 6 A, 8 A slow blow fuse, about 11 lb (5 kg), 73.5 dB at 1 m, operating 18 to 122 F (-7 to 50 C), flow calibration by a locked needle valve at the top of the flow meter. Same catalog lists HV-1S, HV-1RT, HV-1BC, HV1SBC, T8400M, H8400B, H9400, T9400.

F&J Specialty Products LV-1 (current version LV-1D)

Detector

no radiation detector; 1/4 HP oil-less carbon vane vacuum pump, 50/60 Hz, single phase, with rotameter, vacuum gauge, internal intake and exhaust mufflers and a constant air flow regulator (aluminum, silicone diaphragm); filter holders FJ-05P, FJ-21P, FJ-35P, FJ-46P, FJ-51P, FJ-53P (F&J Model B, C or M charcoal cartridge, 47 mm or 2 in particulate paper, quick disconnect)

Detects

Collects airborne particulate and, with a combination holder, radioiodine on a charcoal cartridge; the sample is counted separately

Range

Flow: constant air flow regulator adjustable 1 to 3 CFM (10-100 LPM); maximum capacity 4 CFM (113 LPM) at 0 in Hg pressure drop; ultimate vacuum 0-30 in Hg (0-762 mm Hg); rotameter scales R10100 (10-100 LPM) and R13 (1-3 CFM)

Plug-in low volume air sampler for routine and area air sampling with a manually set flow held nearly constant by the regulator.

Specs are for the LV-1D (catalog rev 18 Feb 2020, 100-120 VAC), which differs from the LV-1 only in having the flow meter and vacuum gauge on a quick disconnect manifold on top of the motor. 100-120 VAC at 6 A, thermal overload in motor, 30 lb (17.2 kg), 16 x 6 x 15 1/2 in, IPX2, 0 to 104 F (-18 to 40 C). Optional elapsed time indicator and timer.

HI-Q Environmental Products CF-900 Series (CF-901, CF-902, CF-903)

Detector

brushed motor with 2-stage centrifugal blower; manual speed control; instantaneous flow reading

Range

CF-901 2-12 CFM; CF-902 5-35 CFM; CF-903 10-50 CFM

Grab or continuous duty radioiodine and particulate sampling in the field.

9.5 lb aluminum cabinet. 115 or 230 VAC; DIGITAL variants add a flow display. CF-901 takes the 1.5 in. CF holders.

HI-Q Environmental Products HVP-4200AFC

Detector

2-stage brushless centrifugal blower, PLC controlled with mass or volumetric flow sensor; 8 x 10 in. filter (HVP-4204AFC takes 4 in.)

Range

10-50 SCFM (HVP-4204AFC: 2-15 SCFM)

Fixed station outdoor particulate air sampling at constant flow as filters load.

115 VAC 5.0 A, max vacuum 49 in. H2O. The 3-stage HVP-4300AFC is the higher vacuum version.

MSA (Zefon International) Escort ELF

Detector

Electronic laminar flow sensor (ELF) with digital flow readout

Range

0.5 to 3.0 LPM

Low-volume lapel or general air sampling pump that holds a set flow constant for filter or cartridge samples.

Flow held within +/-2.5%; 4.8 V NiCd/NiMH battery pack, 14 to 16 h recharge; check against a primary flow standard.

RADeCO H-809V

Detector

two-stage turbine blower, calibrated rotameter; used with RADeCO filter and radioiodine cartridge holders

Range

H-809VI typical 1-8 CFM; H-809VII typical 1-30 CFM

Lightweight grab sampler for airborne particulates or particulates plus radioiodine.

8 x 10 x 7 in., 10.5 lb, UL listed. The 12/24 VDC H-809C is a separate model.

SKC AirChek 52 (Cat. No. 224-52)

Detector

no radiation detector; on-worker sample pump drawing air through a filter cassette, sorbent tube, impinger, cyclone or PPI on 1/4 in ID tubing; LCD with elapsed run time

Detects

Not a radiation instrument; collects airborne particulate on a filter cassette (or other media) worn in the breathing zone, counted separately

Range

Flow: 1000 to 3000 ml/min constant flow; 5 to 500 ml/min needs low flow accessories (All-in-One Adjustable Tube Holder/CPC); holds constant flow to +/-5% of set-point after flow rate verification; back pressure capability 25 in water at 1000 and 2000 ml/min, 20 in water at 2500, 15 in water at 3000 ml/min

Worn on the worker's belt with the filter cassette in the breathing zone to take a personal air sample for the shift.

Rechargeable 4.8 V NiMH pack, 3.3 Ah; 12 h minimum at 2000 ml/min and 25 in water back pressure; 6 to 8.5 h charge. 20 oz (567 g); 5 x 3 x 1.75 in (12.7 x 7.6 x 4.4 cm). 32 to 104 F (0 to 40 C). 62.5 dBA. UL intrinsically safe with SKC battery pack P78011AMH; CE marked; ATEX models available.

Staplex TFIA-2

Detector

universal motor and pump with variable orifice flowmeter calibrated 0-70 CFM; 4 in. filter holder

Range

0-70 cfm (0-2 cmm)

Portable high volume particulate sampling, indoor or outdoor.

TFIA-2 is the 220-240 V version of the 110-125 V TFIA. About 10 lb; 4 in. filter holder standard.

Bladewerx SabreBPM

Detector

Solid-state silicon, 300 µm depleted, 450 mm2 active area; 37 mm filter holder; 6.0 LPM diaphragm pump; 1024-channel MCA for alpha

Detects

alpha (Po-212, Po-214, Po-218 plus up to two isotopes of interest) and beta

Samples air on a filter and reports acute and chronic alpha/beta concentration and DAC, fitting radon daughter peaks to separate them.

Typical beta efficiency 15% for Cl-36; alpha 4-pi efficiency expected 22 to 30%. Battery run time 8 hours.

Canberra Alpha Sentry CAM Now Mirion Technologies

Detects

alpha; efficiency calibrated with a plated Pu-239 or Am-241 source

Fixed-location alpha CAM that tracks airborne activity and alarms on DAC-hour exposure.

Efficiency comes from an off-line calibration count and is stored in the CAM head; the monitor calculates DAC-hr from flow and dpm; a fast acute alarm runs in the head firmware, independent of the Alpha Sentry Manager software; a performance check passes if the new efficiency is within 10% of the stored value (Los Alamos, LA-UR-94-2203).

Eberline AMS-3 (AMS-3A, AMS-3A-1) Now Thermo Fisher Scientific

Detects

beta-emitting airborne particulate collected on a filter; PNNL calibrated and evaluated it with Sr-90(Y). Responded significantly to gamma and neutron fields in PNNL testing

Performance

PNNL evaluation: average background 30 cpm in the lab, up to 100 cpm in the field; MDA for Sr-90(Y) 120 dpm at 30 cpm background and 220 dpm at 100 cpm; accuracy within 0.80 to 1.20 of true value; 115 VAC +/- 10%

Hanford-era analog beta CAM for workplace air; reads in cpm with an alarm and a background-subtract circuit.

A beta air monitor, not alpha/beta. Figures are from PNNL-10938, which tested the AMS-3A-1 and AMS-4 against ANSI N42.18 and N42.17B. The AMS-3A-1 is a modular Hanford design built by Eberline (electronics module plus a lead-shielded detector module), electronically the same as the AMS-3A. Its alarm threshold control is not protected from accidental adjustment. The AMS-4 is its microprocessor successor.

Eberline AMS-4 Now Thermo Fisher Scientific

Detector

Sealed gas-proportional detector (Ar-CO2 radial/gas head, Ne-CO2 in-line head), mica window 2-3 mg/cm2, with gamma background detector

Detects

beta particulate (noble gas with optional gas head)

Performance

4-pi efficiency: Tc-99 9%, Sr-90/Y-90 18%; noble gas head Kr-85 6.4%, Xe-133 4.3%

Draws air through a filter and alarms on airborne beta particulate: slow/fast concentration, net beta rate, DAC-hr, stack release.

Radial inlet or in-line stack head. WinAMS software networks 1 to 12 AMS-4 units.

Eberline PING-1A Now Thermo Fisher Scientific

Detector

Three sampled channels: beta scintillation detector on a 47 mm membrane filter (particulate), NaI(Tl) gamma detector viewing an iodine cartridge, and a beta scintillation detector viewing a gas chamber (noble gas). PING/SPING family (1986 spec): particulate RDA-3A, 2 in x 0.010 in Pilot-B plastic, 1.6 mg/cm2 aluminized mylar window, with a solid-state alpha detector for radon daughter background subtraction; iodine RDA-2A, 2 in x 2 in NaI(Tl), 50 keV window on 364 keV (I-131), TEDA charcoal or silver zeolite cartridge 2 in x 3/4 in; low range noble gas RDA-3A viewing a 270 cm3 chamber; 3 in of lead shielding (4 pi); built-in gamma area monitor

Detects

airborne beta particulate, radioiodine (I-131 364 keV gamma) and noble gas beta/gamma, sampled from a stack or duct

Performance

PING/SPING family (1986 spec): particulate 1 x 10^-11 to 1 x 10^-6 µCi/cm3, iodine 10^-11 to 10^-6 µCi/cm3, low range noble gas 10^-7 to 10^-2 µCi/cm3 (Xe-133); sensitivity at 60 L/min: Cs-137 5 cpm/h for 1 x 10^-11 µCi/cm3, I-131 3.5 cpm/h for 1 x 10^-11 µCi/cm3, Xe-133 28 cpm for 1 x 10^-6 µCi/cm3; nominal backgrounds about 25 cpm (particulate), 45 cpm (iodine), 25 cpm (low range noble gas)

Continuously samples reactor or facility stack air and reads particulate, iodine and noble gas activity concentration against alarm setpoints.

Figures are from the 1986 Eberline PING/SPING family technical specification. The PING-1A reads in cpm on analog meters, with a strip chart recorder and an L/min flow meter. The later PING 206S/207S monitors sold by Mirion are a different design.

Mirion iCAM

Detector

dual PIPS large area silicon; fixed or moving filter (FSLW, GFA or FMLB)

Detects

alpha, beta (and gamma background compensation)

Performance

Typical: alpha 1E-3 to 9E3 Bq/m3, beta 1 to 3.6E5 Bq/m3 (1 hour averaging); efficiency alpha 24%, beta 24% for 36Cl or 90Sr, 15% for 60Co; flow 15 to 60 l/min

Workplace air monitor that alarms on airborne alpha/beta particulate with radon/thoron compensation.

Alpha MCA spectroscopy for radon/thoron compensation; beta window 50 keV to 2.5 MeV. Part of the CAMSYS line.

Mirion iCAM-HD

Detector

2 x CAM1700ASV PIPS detectors

Detects

alpha, beta (optional G64 silicon gamma detector for ambient gamma)

Performance

Airflow up to 120 liters/minute; efficiency alpha 21% (up to 5.7 MeV), beta 22% for 36Cl or 90Sr; measurement range in excess of 500 kBq combined alpha and beta on filter

Higher flow version of the iCAM for lower detection limits in a fixed location.

Same electronics and software family as the iCAM. 30 kg without pump.

Overhoff Technology 400 series (400SBDyC, RS400, RS400-HTO, 400AC, 400AC-M, 400AC-WP)

Detector

four identical ionization chambers in a cruciform arrangement; two (400 cm3 total) measure, the other two compensate for gamma; electrometer measures below 10^-16 A; internal rotary vane pump; external in-line HEPA dust filter

Detects

tritium in air (elemental plus oxide); gamma compensated, gamma response less than 0.2 µCi/m3 per mR/h; alpha/radon pulse suppression circuit

Performance

1 to 19,999 µCi/m3 (also 0.1 to 1,999.9 MBq/m3 or DAC, or 1 to 19,999 µSv/h); sensitivity 2 µCi/m3 (0.1 MBq/m3); accuracy 10% of reading or 2 µCi/m3, whichever is greater; response 30 s to 90% of final reading; zero drift less than 1 µCi/m3 after warm-up of 30 s or less (brochure)

Hand-held sniffer for tritium air concentration and leak checks, with a ten-position alarm (2 to 1,000 µCi/m3) and a low-flow tone.

400SBDyC is the base model; RS400 adds RS-232 output; RS400-HTO adds an external desiccant column to read HTO only, ignoring noble gases; 400AC adds a front-panel gamma compensation disable switch, automatic gamma calibration software, RS-232, rechargeable NiMH batteries; 400AC-M is a ruggedized version and 400AC-WP a waterproof version with a bright LED display. 400SBDyC: two D cells (NiMH or alkaline), flow nominally 1.5 to 2 LPM, 0 to 40 C, 6.5 lb (3 kg), 7.6 x 5.2 x 6.9 in excluding handle. Not for wet or explosive locations. The manual on file is for the 400SBDC (Oct 2019). Overhoff also lists 200 series (200SB, 200SS) monitors.

Overhoff Technology SP1400DD

Detector

dual sealed 1,400 cm3 ionization chambers, one measuring and one for gamma compensation; internal heavy-duty brushless DC pump, 4 to 6 volume changes per minute; in-line disposable dust filter cartridge

Detects

tritium in air; virtually no offset in gamma fields up to 15 mR/h; alpha/radon pulse suppression circuit

Performance

1 to 19,999 µCi/m3 or 0.01 to 199.99 MBq/m3; sensitivity 1 µCi/m3 (0.04 MBq/m3); resolution 0.5 µCi/m3 (0.02 MBq/m3); accuracy 10% of reading or 1 µCi/m3, whichever is greater; response 60 s to 90% of final reading; zero drift less than 0.5 µCi/m3 after 60 s warm-up

Low-level tritium air monitor and leak sniffer that can also run for months as a semi-permanent area monitor.

Overhoff's most sensitive portable tritium monitor; six D size NiMH batteries with a wall charger for continuous operation; connector for remote display, chart recorder or alarm; ten-position alarm attenuator with reset/on/off switch; 0 to 40 C, 20 to 90% RH non-condensing; 16 lb; front panel 5 x 13 in, 12 in deep with handle; pump rated 2,000 h MTBF; shoulder strap, sniffer hose and spare filters stow under the cover.

Thermo Scientific Alpha 7A

Detector

alpha spectrometric detector (radial entry head for ambient air; in-line head for stack or process)

Detects

alpha

Early warning of airborne transuranic (Pu-238, Pu-239) releases with DAC and DAC-hour alarms.

Tracks up to 8 isotopes with spectra refreshed every second. ALPHA7L is the Amphenol connector variant.

Canberra ISOCS (S573) Now Mirion Technologies

Detector

High purity germanium (HPGe) detector individually ISOCS characterized by Canberra (MCNP model validated with a NIST traceable source)

Detects

gamma

Performance

Efficiency characterized for photon energies 45 keV through 7 MeV, any location within a 500 m radius sphere around the detector

Measure gamma activity of drums, pipes, soil and room surfaces in place, calibrating efficiency by software for each geometry.

LabSOCS (S574) uses the same algorithms for laboratory counting.

Canberra iSolo (SOLO300U / SOLO300G) Now Mirion Technologies

Detector

PIPS silicon, 2000 mm2 area, 300 µm sensitive depth; SOLO300G adds a guard detector

Detects

alpha, beta

Performance

Background SOLO300U: alpha 0.10 cpm, beta 33.0 cpm guaranteed; SOLO300G: alpha 0.08 cpm, beta 12.0 cpm guaranteed

Counts air sample filters and smears for alpha and beta, with radon/thoron compensation for long-lived alpha activity.

Guaranteed 50 mm efficiency: 30.0% Am-241 alpha, 22.0% Sr-90 beta. Filters up to 60 mm diameter.

Canberra Series 5 XLB Now Mirion Technologies

Detector

gas flow proportional counter with a P-10 gas-filled guard detector

Detects

alpha and beta

Automatic sample changer for low background counting of air filters, smears, water and soil samples.

Mirion calls the Series 6LB its direct replacement. The XLB needed rear access (removing lead shielding bricks) to reach the detector, and its guard detector ran on P-10 gas, which the 6LB replaced with a gasless plastic scintillator guard. The XLB already used less P-10 than the older LB5100.

Eberline BC-4 Now Thermo Fisher Scientific

Detector

standard pancake GM tube, same as used on HP-260/HP-210 survey probes, 4.4 cm (1 3/4 in.) diameter window, 1.4 to 2.0 mg/cm2; PNNL calibration lab adds a 0.002 in. Mylar window; detector shielded top and sides by at least 2.2 cm (7/8 in.) lead; sample drawer takes samples up to 5.2 cm (2 in.) diameter and 1.0 cm (3/8 in.) thick

Detects

beta and gamma; beta response above about 200 keV (99Tc); gamma efficiency about 0.5%, responding above a few keV; window blocks alpha; insensitive to neutrons. With the Mylar window removed the beta limit drops to 14C / about 150 keV

Performance

PNNL calibrated efficiencies: 29% 90Sr/Y, 10% 99Tc (minimum acceptable 90Sr/Y efficiency at PNNL is 24%); detector voltage set to 900 V (+/-25%); count time 0.1 min (6 s) to 50 min; six-digit LED scaler; count time range switch X.1, X1, X10

Bench counter for gross beta counting of dry technical smears and air sample filters in 2 in. planchets.

AC powered; about 12 kg (26 lb), 27 cm W x 13 cm H x 34 cm D; front panel has count time switches, timed/stop/manual mode switch, start/reset button and a count LED; high voltage adjustment is internal; cannot discriminate radon progeny; sample holder height is set at calibration and the efficiency only holds at that height; indoor use, Eberline rates 0 to 60 C (32 to 140 F). Efficiencies are for the PNNL (Hanford) calibration, not a manufacturer spec. Source is the PNNL Radiation Protection Instrument Manual, section 21 (BC-4).

Eberline MS-2 Mini Scaler Now Thermo Fisher Scientific

Detector

none supplied; takes practically any scintillation, GM or proportional detector on an MHV coaxial connector; regulated adjustable high voltage 200 V to about 2500 V (plug-in EIC P-201B module), can supply a 100 megohm load

Detects

depends on the detector connected (alpha, beta, gamma)

Performance

six-digit LED scaler; four linear rate meter ranges 500, 5000, 50,000 and 500,000 cpm full scale (linearity within +/-5% of full scale, response time adjustable 1 to 13 s); timer 0.1 to 50 min in a 1-2-5 sequence; threshold 0 to 1.0 V and window 0 to 1.0 V (ten-turn dials, window can be switched out for gross counting); resolution 2 microseconds with pulse height twice threshold

Scaler/timer and single channel analyzer that reads GM, scintillation or proportional probes for counting smears and samples.

Charge sensitive input; internal gain 1.0 to 10 V per picocoulomb. 115/230 VAC 50/60 Hz or external battery 7.5 to 14 V; 0 to 60 C; 4.5 in. H x 9-5/8 in. D x 10-1/2 in. W (11.4 x 24.4 x 26.7 cm); 6.5 lb (2.95 kg). Manual dated May 1983 with changes through Feb 1988 (Eberline, subsidiary of Thermo Instrument Systems). The MS-3 is the same instrument without the pulse height analyzer and rate meter.

Eberline MS-3 Mini Scaler Now Thermo Fisher Scientific

Detector

none supplied; takes practically any scintillation, GM or proportional detector on an MHV coaxial connector; regulated adjustable high voltage 200 V to about 2500 V (plug-in EIC P-201AS module), can supply a 100 megohm load up to 1700 V

Detects

depends on the detector connected (alpha, beta, gamma)

Performance

six-digit LED scaler; timer 0.1 to 50 min in a 1-2-5 sequence, accuracy typically better than 0.05%; timed/stop/manual modes; resolution 2 microseconds with pulse height twice threshold; no rate meter

Scaler/timer that reads GM, scintillation or proportional probes for counting smears and samples.

Charge sensitive input; internal gain 0.12 to 1.2 picocoulombs (about 1 to 10 mV on voltage sensitive input). 115/230 VAC 50/60 Hz or external battery 7.5 to 14 V; 0 to 60 C; 4.5 in. H x 9-5/8 in. D x 8-1/4 in. W (11.4 x 24.4 x 21 cm); 5-3/4 lb (2.6 kg). Eberline technical manual dated 1978. Simpler than the MS-2, which adds a single channel analyzer and rate meter.

Eberline SAC-4 Now Thermo Fisher Scientific

Detector

ZnS scintillator powder on a plastic light pipe viewed by a photomultiplier tube; detector and sample share a light tight can, so no window between ZnS and sample; self-contained unshielded box

Detects

alpha only; amplitudes above a 1.25 V discriminator are counted, which rejects betas

Performance

typical background 0.3 cpm; six decade LED readout; preset count times 0.1 to 50 min (synchronized to 60 Hz line) or manual count until reset; takes samples up to 2 in diameter by 3/8 in thick; amplifier output 0 to 10 V

Counts alpha smears and filters for total alpha activity in the counting room; checked each shift with a Pu-239 source.

Described in the DOE RCT handbook, Module 2.19. The sample holder in the slide drawer is adjustable, but the unit is calibrated for one position; moving it invalidates the calibration. Detector and sample drawer come out for decontamination. Convert net cpm to dpm with the counter's efficiency.

Hidex 300 SL

Detector

three PMT TDCR counter, minimum 70 mm internal lead shielding

Detects

beta, alpha

Performance

beta up to 2,000 keV; alpha up to 10,000 keV (LSC mode)

Counts H-3, C-14 and other low-level beta or alpha emitters in liquid samples; direct DPM by TDCR.

Racks 96 x 5 mL, 96 x 7 mL or 40 x 20 mL vials. 125 kg. Needs no external standard for TDCR efficiency.

Ludlum Model 2929

Detector

phoswich or proportional type detectors (typically used with Model 43-10-1 alpha/beta sample counter head)

Detects

alpha, beta

Performance

2 six-digit LED scalers, 0-999999 counts; timer 0.1 to 990 minutes; HV 200-2500 V

Scaler and timer for counting alpha and beta smear and air filter samples.

Independent RS-232 outputs for alpha and beta channels.

Ludlum Model 3030

Detector

ZnS(Ag) on plastic scintillator, 5.1 cm PMT, 20.3 cm2 area, 0.4 mg/cm2 aluminized Mylar window

Detects

alpha, beta (simultaneous)

Performance

4pi efficiency: alpha 32% 230Th, 39% 238U, 37% 239Pu; beta 8% 14C, 27% 99Tc, 29% 137Cs, 26% 90Sr/90Y; background alpha 3 cpm or less

Counts smears and air filters for alpha and beta at the same time.

Crosstalk alpha to beta 10% or less, beta to alpha 1% or less. Also sold as the 3030-2 and 3030P.

Mirion BEGe (Broad Energy Germanium)

Detector

broad energy germanium crystal, 20 to 65 cm2 area and 20 to 30 mm thick, carbon composite window, iPA II intelligent preamplifier

Detects

gamma and X-ray

Performance

3 keV to 3 MeV

Counting room gamma spectroscopy with strong efficiency below 1 MeV for typical samples.

Compared by Mirion with 60% relative efficiency coaxial detectors; low energy resolution like a LEGe.

Mirion Series 6LB

Detector

5.7 cm (2.25 in.) gas flow proportional detector, gasless plastic scintillator anti-coincidence guard, 50 or 100 sample changer

Detects

alpha, beta

Performance

Background: alpha 0.10 cpm, beta 0.9 cpm, gross 1.0 cpm; efficiency alpha 38% (210Po), beta 45% (90Sr/90Y)

Batch counting of air filters, swipes, water and soil samples for gross alpha/beta.

Descends from the Canberra/Tennelec LB5100 and directly replaces the Series 5 XLB.

ORTEC GEM series HPGe coaxial detector Now AMETEK

Detector

P-type coaxial high purity germanium; efficiencies to 150%; carbon fiber endcap and ICS cryocooling options

Detects

gamma (about 40 keV and upwards)

Performance

Relative efficiency to 150%

Gamma spectroscopy of environmental, effluent and bioassay samples in the counting room.

Typically paired with ORTEC MCA electronics and GammaVision software; LN2 or mechanical cooling.

ORTEC MPC-9604 Now AMETEK

Detector

four 2.25 in. (5.7 cm) pancake gas flow proportional detectors, cosmic guard, 4 in. low background lead; aluminized window 80 ug/cm2

Detects

alpha, beta

Performance

Background shielded and guarded: warranted <0.1 cpm alpha, <0.1 cpm beta; typical <0.05 alpha, <0.7 beta. Efficiency e.g. 239Pu 35%, 90Sr/Y 55% (top position)

Counts swipes, air filters and water samples for gross alpha/beta at low detection limits.

Uses P-10 gas at 60 cc/min with failsafe gas monitoring; 2 in. planchets; 1200 lb.

Revvity Tri-Carb 5110TR

Detector

liquid scintillation counting with time-resolved (TR-LSC) background reduction and alpha/beta separation (dual PSA discriminator)

Detects

beta, alpha (low energy beta emitters such as 3H and 14C)

Performance

Sample conveyor holds up to 408 (20 mL vials) or 720 (4 or 7 mL vials); ULLCM E2/B factory minimum 500 for 3H and 1,400 for 14C

Counts tritium and C-14 in water, bioassay and smear samples.

Revvity is the former PerkinElmer/Packard Tri-Carb line. 238 kg, built-in Windows PC with QuantaSmart.

Mirion 2250 FASTSCAN

Detector

two 7.6 x 12.7 x 40.6 cm (3 x 5 x 16 in.) NaI(Tl) detectors, LED stabilized on stabilized models; 10 cm (4 in.) low background steel shadow shield

Detects

gamma emitters from 300 keV to 1.8 MeV

Range

LLD about 150 Bq (4 nCi) Co-60 for a one minute count with a person in the shield; flat (+/-15%) response along the body axis; 30 to 50 people per hour; stabilized detectors stable to about +/-2% (typical) from -20 to 50 C

Quick in-plant whole body count for internal contamination where the nuclide mix is known and simple, such as power plant exit counts.

Spec sheet C39771 (Mirion-branded, formerly Canberra). Apex-InVivo and Genie software; full spectroscopy, not just screening; no moving parts. Shield 4800 kg (10,600 lb), heaviest item 385 kg (850 lb), 1.24 x 0.9 m floor space, 2.11 m (83 in.) high; operating temperature stable to within 1 C; front and back counts possible. Options include the 2257 transfer phantom and the SelfScan automation add-on.

Mirion ACCUSCAN (Model 2260 horizontal bed)

Detector

up to three 5 x 3 x 16 in. NaI detectors, or two NaI and two germanium (GC2520, 25% relative efficiency coax) detectors; 10 cm (4 in.) low background steel shadow shield

Detects

gamma emitters in the body

Range

typical MDA for an eight minute scanning count, one NaI detector / two NaI detectors: Cs-137 whole body 204 Bq (5.5 nCi) / 144 Bq (3.9 nCi); Co-60 lung 141 Bq (3.8 nCi) / 100 Bq (2.7 nCi); I-131 thyroid 104 Bq (2.8 nCi) / 74 Bq (2.0 nCi); with two germanium detectors Cs-137 whole body 348 Bq (9.4 nCi). Count time 5 to 8 minutes; 2 m (6.5 ft) scanning range

Counts a reclining subject while the detector tower scans along the body to find and quantify internal contamination, common in hospitals, research sites and plants.

Spec sheet C39772 (10/2013). Complies with ANSI N13.30 and CE; calibrated with NIST traceable source and the 2257A transfer phantom; Apex-InVivo software gives energy and positional spectra. Shield 5450 kg (12,000 lb), heaviest item 450 kg (1000 lb), floor space 4.6 x 1.2 m (15 x 4 ft), height 0.9 m for NaI, 1.5 m for Ge; 0 to 40 C operating. The ACCUSCAN II (Model 2280) is a separate scanning germanium stand-up unit.

Arrow-Tech 742

Detector

fiber electrometer in electrically conductive plastic ion chamber (described as carbon-fiber electroscope)

Detects

gamma and X-ray, 16 keV to 6 MeV

Range

0-200 R

Self-reading pocket dosimeter for high-range gamma exposure checks.

Accuracy +/-10% of true exposure; leakage under 1% of full scale in 24 h; ANSI N13.5 and N322.

Arrow-Tech W138

Detector

fiber electrometer in electrically conductive plastic ion chamber

Detects

gamma and X-ray, 16 keV to 6 MeV

Range

0-200 mR

Low-range self-reading pocket dosimeter (SRPD) for routine entries; recharged on a charger.

W138-S is the 0-2 mSv version. Arrow-Tech recommends yearly calibration.

Landauer InLight OSL dosimeter

Detector

aluminum oxide (Al2O3:C) detectors read out with LED stimulation and a photomultiplier tube

Detects

x-ray, gamma, beta (neutron with optional CR-39)

Range

Linear from 10 µSv (1 mrem) to over 10 Sv (1,000 rem); energy 5 keV to 20 MeV; gamma/x-ray/beta minimal reporting 50 µSv (5 mrem)

Passive whole body or area badge for monthly or quarterly dose of record.

Nondestructive readout so a badge can be re-read; no annealing. Read by an InLight reader.

Landauer Luxel+

Detector

thin Al2O3:C (aluminum oxide) strip sandwiched in a multi-element filter pack, heat sealed in a light-tight paper wrapper inside a tamper-proof plastic blister pack; optional Neutrak 144 CR-39 neutron detector built in

Detects

photon (X and gamma) 5 keV to in excess of 40 MeV; beta 150 keV to in excess of 10 MeV; optional neutron: fast 40 keV to in excess of 35 MeV, thermal under 0.5 eV

Range

dose response range: photon 1 mrem to 1000 rem; beta 10 mrem to 1000 rem; neutron (CR-39) fast 20 mrem to 25 rem, thermal 10 mrem to 5 rem; minimum reporting as low as 1 mrem with precision of ±2 mrem

Vendor-processed badge for whole body dose of record, exchanged each wear period and read by Landauer.

Passive dosimeter, so the range is dose response, not dose rate. Al2O3:C detector can be restimulated for reanalysis; an automatic full reanalysis is done on any measurement over 500 mrem. Filter pattern gives imaging of static, dynamic or contamination exposure conditions. May be worn up to one year. NVLAP lab code 100518-0. 2017 Landauer sheet 50595.

Landauer Neutrak

Detector

CR-39 (allyl diglycol carbonate) solid-state nuclear track detector, not sensitive to x, beta or gamma; fast version uses a polyethylene radiator (recoil protons); fast/intermediate/thermal version adds a boron loaded Teflon radiator (alpha tracks); etched 15 hours then tracks are counted

Detects

fast neutron version: 40 keV to 40 MeV; fast, intermediate and thermal version: 0.25 eV to 40 MeV

Range

dose response range: fast version 20 mrem to 25 rem (200 µSv to 250 mSv); fast, intermediate and thermal version 10 mrem to 25 rem (100 µSv to 250 mSv)

Vendor-processed neutron badge, worn alone or inside a Luxel+ or InLight holder with the whole body OSL badge.

Passive dosimeter, so the range is dose response, not dose rate. Fast version suits unmoderated or lightly shielded Cf-252 and Am-Be sources; the thermal version suits graphite-moderated sources and mixed fields like power plants. Laser engraved ID and 2-D bar code. NVLAP category VIA when combined with Luxel+ or InLight (lab code 100518-0); DOELAP, UK HSE and CNSC listed. The Luxel+ sheet (2017) gives slightly different neutron figures: fast 40 keV to in excess of 35 MeV, thermal under 0.5 eV, thermal dose 10 mrem to 5 rem.

MGP Instruments DMC 2000 S Now Mirion Technologies

Detector

Gamma detector (detector 1 for gamma above 50 keV)

Detects

X and gamma from 50 keV; Hp(10)

Range

Dose equivalent 1 µSv to 10 Sv; dose equivalent rate from background to 10 Sv/h

Worn electronic dosimeter showing dose and dose rate with pre-alarm and alarm; set up and read by LDM readers.

Configured with DosiMass software. Pass-by reads at 1.2 m; CR2450 battery about 1 year; IP67.

MGP Instruments DMC 2000 X Now Mirion Technologies

Detector

Gamma and X-ray detector (detector 2 for gamma and X above 20 keV)

Detects

X and gamma from 20 keV; Hp(10)

Range

Dose equivalent 1 µSv to 10 Sv; dose equivalent rate from background to 10 Sv/h

Worn electronic dosimeter showing dose and dose rate with pre-alarm and alarm; set up and read by LDM readers.

Same manual as the DMC 2000 S; configured with DosiMass. Battery about 9 months; IP53.

MGP Instruments DMC 2000 XB Now Mirion Technologies

Detector

Gamma/X-ray detectors plus a beta detector

Detects

X and gamma from 20 keV; beta from 60 keV; Hp(10) and Hp(0.07)

Range

Dose equivalent 1 µSv to 10 Sv; dose equivalent rate from background to 10 Sv/h

Worn electronic dosimeter showing dose and dose rate with pre-alarm and alarm; set up and read by LDM readers.

Only DMC 2000 version reading shallow dose Hp(0.07). Same manual as DMC 2000 S. Battery about 9 months; IP53.

MGP Instruments DMC 3000 Now Mirion Technologies

Detector

Two detectors: one for high energy gamma and X-ray above 50 keV, one for low energy X-ray down to 15 keV

Detects

X-ray and gamma, 15 keV to 7 MeV; Hp(10)

Range

Dose 1 µSv to 10 Sv; dose rate 0.1 µSv/h to 20 Sv/h

Worn electronic dosimeter with large backlit display, speaker, LEDs and vibrator alarms for dose and dose rate.

G2 protocol keeps it compatible with DMC 2000 readers (LDM 220/2000). AAA battery, about 9 months typical; IP67.

MGP Instruments LDM 210 Now Mirion Technologies

Range

Dosimeter link 20 to 30 cm nominal (5 to 20 cm reduced range)

Connects DMC 2000 and SOR dosimeters to dosimetry software (DosiMass, Dosimed, Dosifast) for assigning, setup and readout.

RS-232 to PC; 9 V DC power supply, optional 2 AAA battery (about 10 h). Same manual as LDM 220.

MGP Instruments LDM 220 Now Mirion Technologies

Range

Dosimeter link 20 to 30 cm nominal (5 to 20 cm reduced range)

Connects DMC 2000 and SOR dosimeters to dosimetry software for assigning, setup and readout over USB.

Powered by the USB port (4.15 to 5.25 V). DMC 3000 in G2 mode is compatible. Same manual as LDM 210.

Mirion Instadose+ and Instadose2

Detector

Direct Ion Storage; Instadose+ has a single detector (deep Hp(10)); Instadose2 has dual detectors (deep Hp(10) and shallow Hp(0.07)); Bluetooth

Detects

photon 5 keV to 6 MeV; Instadose2 also beta (sheet lists 'Beta 0.8 MeV')

Range

dose response range: Instadose+ minimum reportable dose 5 mrem (0.05 mSv), 3 mrem on request, useful range 1 mrem to 500 rem (0.01 mSv to 5 Sv); Instadose2 minimum reportable dose and useful range 10 mrem to 500 rem (0.1 mSv to 5 Sv)

Badge the wearer or RSO can read at any time with a phone app or InstaLink hotspot instead of waiting for a monthly report.

Passive-type range, not dose rate. Facility reads are allowed up to a cumulative 100 mSv (10 rem); above that, or outside occupational monitoring, the badge goes to Mirion Dosimetry Services. 2 x 2 in (Instadose+ top 1 x 1 in), 0.8 oz. Best used and stored at 10 to 30 C (50 to 86 F), indoors. NVLAP lab code 100555-0.

Panasonic UD-802 (UD-800 series TLD badge)

Detector

four-element TLD badge (elements E1 to E4)

Detects

photon; accredited by Dosilab AG under Irish EPA approval for Hp(10) photon 16 keV to 1.25 MeV and Hp(0.07) beta, no neutrons

Range

dose response range per the Panasonic UD-7900 reader sheet for UD-800 series badges: Li2B4O7 10 mR to 1000 R (100 µSv to 10 Sv); CaSO4 1 mR to 50 R (10 µSv to 500 mSv); Dosilab AG approval lists 0.05 mSv to 1 Sv

Vendor-processed whole body TLD badge read in Panasonic UD-7xx automatic readers.

Passive dosimeter, so the range is dose response, not dose rate. Read in Panasonic UD-7xx automatic readers (the UD-7900 reads all UD-800 series badges, and its slow mode emulates the UD-716). The 16 keV to 1.25 MeV and 0.05 mSv to 1 Sv figures are one dosimetry service's approved scope (Irish EPA approval for Dosilab AG), not a Panasonic spec.

Thermo Scientific EPD-G

Detector

multi-detector silicon technology, beta window removed

Detects

X and gamma

Range

Dose 0 to >16 Sv (0 to >1600 rem); dose rate 0 to >4 Sv/h (0 to >400 rem/h); photon 15 keV to 10 MeV

Worn electronic dosimeter showing Hp(10) deep and Hp(0.07) shallow dose and dose rate with alarms.

Gamma-only variant of the Mk2 beta/gamma EPD; single AA battery. Thermo has replaced the EPD line with the EPD TruDose.

Thermo Scientific EPD-N2

Detector

multiple diode detectors with converters and energy compensation shields; direct readout of Hp(10) for neutron and for photon dose

Detects

photons 20 keV to 10 MeV; neutrons thermal (0.025 eV) to 15 MeV; neutron dose within approximately ±30% of true value for many workplace fields with a single calibration

Range

dose display and storage 0 to >16 Sv, auto-ranging; dose rate display 0 to >4 Sv/h (400 rem/h), auto-ranging; photon energy response ±20% 25 keV to 1.5 MeV, ±30% to 6 MeV, ±50% to 10 MeV

Worn dosimeter that reads photon and neutron Hp(10) separately in mixed neutron and gamma fields such as spent fuel, source and accelerator work.

2007 Thermo product sheet. Accuracy Hp(10) photon 10% (Cs-137), neutron 20% (Am-Be). Angular response photon ±20% to ±75 deg (Cs-137), neutron ±30% to ±60 deg (Am-Be). One AA cell, 1.5 V alkaline or 3.6 V lithium; continuous life typically 42 days alkaline, 4.5 to 5 months lithium. IR link under 1 m. Alarm typically 98 to 100 dB(A) at 20 cm. 86 x 63 x 18.5 mm, 108 g with battery and clip. Operating -10 to 40 C, storage -25 to 70 C, 20 to 90% RH, IP55. Thermo's catalog page for it says not orderable at the moment; the EPD TruDose NG is the current neutron/gamma EPD.

Thermo Scientific EPD Mk2

Detector

multi-detector design with direct readout of Hp(10) deep and Hp(0.07) shallow dose equivalent; the gamma-only EPD-G is the same design with the beta detector and window removed

Detects

gamma, X-ray and beta; 0.015 to 10 MeV (15 keV to 10 MeV)

Range

dose range 0 to >400 rem/hr per the Thermo catalog page; the EPD-G sheet (same design) gives dose display and storage 0 to >16 Sv (0 to >1600 rem) and dose rate 0 to >4 Sv/h (0 to >400 rem/h), auto ranging

Alarming worn dosimeter that shows dose and dose rate, read and issued over an IR link for RWP work.

Discontinued and replaced by the EPD TruDose. Accuracy Hp(10) 137Cs ±10%, Hp(0.07) 90Sr/90Y ±20%. One AA cell: 1.5 V alkaline (up to 30 weeks continuous) or 3.6 V lithium (typically 5 to 10 months). 19 x 63 x 85 mm, 95 g with battery and clip. -10 to +40 C. IR link up to 1 m; audible alarm typically 98 dB(A) at 20 cm; exceeds IEC 61526. The EPD-G is the gamma-only version.

Thermo Scientific EPD TruDose

Detector

multi-detector technology measuring gamma and beta; Bluetooth Low Energy telemetry

Detects

gamma (G); beta and gamma (BG)

Range

Hp(10) dose 1.0 µSv to 10 Sv; dose rate 0.05 µSv/h to 10 Sv/h (IEC61526); Hp(10) photon 16 keV to 1.5 MeV

Worn electronic dosimeter for real-time dose and dose rate with built-in Bluetooth.

IP67 (G) and IP65 (BG). Successor to the EPD Mk2 line.

Thermo Scientific Harshaw 6600 Plus

Detector

two heating channels with dual cooled PMTs; non-contact hot nitrogen gas heating; LiF:Mg,Ti cards

Detects

gamma, beta, neutron dosimeters (TLD)

Range

Seven decades; readout 70 TLD cards per hour (EXT-RAD 140/h, DXT-RAD 280/h)

Reads TLD cards and extremity dosimeters for dose of record.

Processes up to 200 cards per run; optional built-in 0.5 mCi 90Sr/Y irradiator; WinREMS software.

Thermo Scientific Harshaw 8800 / 8800 Plus

Detector

four heating and data acquisition channels with four cooled photomultiplier tubes, reading four TL elements at once; 8800 Plus has an optional 90Sr/Y internal irradiator (0.5 mCi / 18.5 MBq)

Detects

reads TLD cards, EXT-RAD and DXT-RAD extremity dosimeters for beta, gamma, X-ray and neutron dose; Harshaw TLD materials have a linear useful range of 1 µGy to 20 Gy

Range

reader range seven decades; photomultiplier linearity under 1% deviation; repeatability under 2% (1 standard deviation of 10 reads at 1 mGy 137Cs); readout 140 cards/h, EXT-RAD 280/h, DXT-RAD 560/h; up to 1400 cards per run; 20 minute warm-up

High-volume reader for a dosimetry lab, run overnight on 1400-card carousels.

Specs are from the 8800 Plus brochure (BR-RMSI-8800-0616). The earlier 8800 also reads up to 1400 four-element cards at 140/h, uses WinREMS software, and networks with the Model 4500 and 6600. 8800 Plus: 180 kg, 105 x 78 x 68 cm (H x W x D), 110/120 or 220/240 VAC, 15 to 40 C, barcode card ID. Cards are good for up to 500 reads.

Canberra Falcon 5000 Now Mirion Technologies

Detector

P-type HPGe, electrically cooled (no liquid nitrogen), with an InSpector MCA built in

Detects

gamma

Field gamma spectrometer for emergency response, in situ measurements and sample counting, run from a wireless tablet with Genie software.

Runs 3 to 6 hours on hot swappable Li-ion packs (76 Wh and 118 Wh; the 76 Wh pack can ship by commercial air), per a Sandia training deck. Supports ISOCS. Mirion calls the Aegis its successor.

Canberra InSpector 1000 Now Mirion Technologies

Detector

detachable stabilized NaI or LaBr probe (external NaI 1.5 x 1.5 in. probe listed by one institute); integrated GM detector

Detects

gamma

Handheld device that finds sources, shows dose rate and identifies nuclides with a stabilized probe and a color touch screen.

Identification algorithms built to minimize false IDs, color touch display, remote data transfer, works with laboratory gamma software; the LaBr probe gives about twice the resolution of NaI at 661 keV. Functions: dose rate and dose, source finding, nuclide identification, spectrum acquisition and analysis.

FLIR identiFINDER R440 Now Teledyne FLIR

Detector

NaI(Tl) 2.0 x 2.0 in (51 x 51 mm) standard (NaI(G) version gives neutron indication); optional NaIL (neutron measurement), CLLBC 1.4 x 1.5 in (36 x 38 mm), LaBr 1.5 x 1.5 in (38 x 38 mm); optional ZnS(Li) neutron detector with 2 moderated panels (27 x 58 x 5 mm); sourceless Quantum gain stabilization; 1024 channel spectrum

Detects

gamma 10 keV to 10 MeV (all detectors); neutron indication (NaI(G)) or measurement (NaIL 2.8 cps/nv, CLLBC 17 cps/nv, LaBr 7.8 cps/nv)

Range

Dose rate 10 nSv/h to 10 mSv/h (1 µrem/h to 1 rem/h), +/-10%; ID mode 10 nSv/h to 250 µSv/h (1 µrem/h to 25 mrem/h); overload range 10 mSv/h to 500 mSv/h (1 to 50 rem/h); Cs-137 sensitivity 1850 cps/(µSv/h) NaI/NaIL, 985 CLLBC, 780 LaBr; resolution at 662 keV 7% FWHM NaI/NaIL, 4% CLLBC, 3% LaBr

Handheld spectroscopic identifier for routine survey and secondary screening that names the radionuclide and sorts it as SNM, industrial, medical or NORM.

3.2 lb (1.5 kg); 4 x 10.6 x 3.7 in (10.2 x 26.9 x 9.4 cm); aluminum housing, IP67; -20 to 50 C; 3 in color display. Two hot swappable Li-ion packs (6 h each) and a 4 x AA pack (4 h). USB, Bluetooth, WiFi, GPS, 32 GB memory, ANSI N42.42 data, exceeds ANSI N42.34. Libraries SNM, IND, MED, NORM.

Kromek D3S ID

Detector

CsI(Tl) gamma detector, 1 in3 (16 cm3); non-3He compact thermal neutron detector (9 cps in a 1 neutron per cm2 field); high dose module

Detects

gamma 30 keV to 3 MeV; thermal neutrons; neutron detector gamma rejection better than 10-7

Range

Gamma sensitivity for Cs-137 5 cps/(µR/h) (500 cps/(µSv/h)), photo peak 1.2 cps/(µR/h); maximum gamma throughput 10,000 cps; maximum dose rate 2.0 mR/h (20 µSv/h) at 662 keV spectroscopic, 100 R/h (1 Sv/h) with the high dose module; maximum neutron throughput 5,000 cps

Belt-worn search and identification device that alarms on gamma or neutron sources and names the isotope on a paired Android phone.

5.2 x 3.1 x 0.9 in (132 x 80 x 23.5 mm), 0.52 lb (237 g) without phone; 1450 mAh Li-polymer, 12 h (24 h with add-on pack); -20 to 50 C; IP53 (IP65 with add-on enclosure). Library of 42 isotopes in Medical, NORM, Industrial and SNM classes. The D3S PRD is the lower tier, field upgradeable to ID. Kromek's newer RIID is the D5.

Mirion SPIR-Ace

Detector

NaI(Tl) 35 mm x 51 mm or LaBr3(Ce) 25.4 mm x 34 mm; energy compensated GM tube; optional 6LiZnS:Ag neutron detector

Detects

gamma, neutron (optional)

Range

25 keV to 3 MeV (gamma); gamma dose rate 0.001 µSv/h to 100 mSv/h (0.1 µR/hr to 10 R/hr)

Identifies radionuclides and estimates quantity with Genie software support.

Library of 80 nuclides, up to eight identified at once. ANSI N42.34 and IEC62327. 1.45 kg maximum.

ORTEC Detective X Now AMETEK

Detector

P-type coaxial HPGe crystal 65 mm diameter x 50 mm length with Stirling cooler

Detects

gamma (optional neutron: segmented LiF/ZnS)

Range

Gamma dose rate range <0.05 mR/h to >100 R/h

High resolution identification of radionuclides in the field.

Library of over 175 nuclides; initial cool down about 8 hours; 6.98 kg (gamma only); IP65.

ORTEC Micro-Detective (Micro-Detective-DX gamma only) Now AMETEK

Detector

P-type coaxial HPGe, 50 mm diameter x 40 mm deep, in a hardened cryostat with a low power Stirling cooler; compensated GM tube for dose rate; moderated single 3He tube (4 in active length, 0.5 in diameter, 20 atm) on the neutron model (absent on the DX); 8k channel digital MCA

Detects

gamma spectroscopy with nuclide identification (ANSI and Classify modes, ANSI N42.34 library) and gamma dose rate; neutron count rate on the non-DX model

Range

Gamma dose rate from <0.05 µSv/h to >10,000 µSv/h (about six decades); Ge spectrum used below about 20 µSv/h, GM tube above; uncertainty -50% to +100%; continuous audible alarm above 10,000 µSv/h

Handheld HPGe identifier for resolving complex or masked spectra that scintillator RIIDs cannot separate.

15.2 lb (6.9 kg); 14.7 x 5.75 x 11 in; Li-ion 14.4 V 6.2 Ah, up to 5 h when the HPGe is cold; initial cool down typically under 12 h at 25 C; -10 to 40 C; IP67 capable; GPS, SD card, USB, optional WiFi. Search modes: SNM, monitor and total count rate. Supported by MAESTRO and GammaVision.

target systemelectronic GmbH identiFINDER NHG

Detector

1.4 in. x 2 in. NaI(Tl) scintillator; internal GM tube for high dose rates; optional moderated He-3 tube for neutrons

Detects

gamma spectrometry and dose rate; neutron indication (optional)

Range

Dose rate 0.01 µSv/h to 1 Sv/h (NaI to 500 µSv/h, GM above); energy range 15 keV to 3 MeV

Identifies gamma nuclides from the spectrum, reads dose rate, and finds sources.

Resolution 7.0 to 7.5% at 662 keV; internal Cs-137 stabilization; 100 spectra memory.

Thermo Scientific RIIDEye X

Detector

2 in. x 2 in. NaI (X-G, X-GN) or 1.5 in. x 1.5 in. LaBr (X-H, X-HN); optional CLYC neutron crystal

Detects

gamma, neutron (N versions)

Range

20 keV to 3 MeV

Identifies the radionuclide behind an unknown source or alarm.

2.6 kg with NaI. IP65; tested to ANSI N42.34-2006. Original RIIDEye (2 in. NaI, 1.4 kg) was the earlier model.

MGP Instruments AMP-50 Now Mirion Technologies

Detector

Energy compensated GM tube (ZP1201 or equivalent)

Detects

gamma, X-ray

Range

0.05 mR/h to 4000 mR/h

Remote gamma rate probe on a cable (up to 350 ft) for tanks, filters and underwater areas; reads on a handheld meter or feeds a monitor/WRM.

Sensitivity 17 cps/mR/h (Cs-137); 70 keV to 2.0 MeV; detector waterproof to 20 m; part RTM-A007.

MGP Instruments AMP-100 Now Mirion Technologies

Detector

Energy compensated GM tube (ZP1301 or equivalent)

Detects

gamma, X-ray

Range

0.005 R/h to 1000 R/h

Remote gamma rate probe on a cable (up to 350 ft) for tanks, filters and underwater areas; reads on a handheld meter or feeds a monitor/WRM.

Sensitivity 300 cps/R/h (Cs-137); 70 keV to 2.0 MeV; detector waterproof to 20 m; part RTM-A004.

MGP Instruments AMP-200 Now Mirion Technologies

Detector

Energy compensated GM tube (4G60M or equivalent)

Detects

gamma, X-ray

Range

1.0 R/h to 10,000 R/h

Remote gamma rate probe on a cable (up to 350 ft) for tanks, filters and underwater areas; reads on a handheld meter or feeds a monitor/WRM.

Sensitivity 77 cps/R/h (Cs-137); 70 keV to 2.0 MeV; detector waterproof to 20 m; part RTM-A005.

MGP Instruments DMC 3000 Telemetry Module Now Mirion Technologies

Range

Transmission range 1.6 miles line of sight (900 MHz), 1 mile (2.4 GHz DM); interval 2 to 64 s

Clips onto a DMC 3000 to send its readings to a base station (WRM2 protocol) and add bright LED alarm indicators.

Works with WinWRM2, TeleView 2000 and TeleView 3000 software; AAA battery, over 24 hours of runtime.

MGP Instruments WRM2 Wireless Remote Monitoring System Now Mirion Technologies

Detects

dose data from DMC-2000 electronic dosimeters and area monitors

Range

Radio range 1.6 miles line of sight (900 MHz); 1,150 ft (350 m) at 10 mW (2.4 GHz)

Sends worker dosimeter readings and alarms by radio to a base station so HP can watch jobs remotely.

Set up with the WRM Configuration Studio software.

Hart Scientific (Fluke) 1620A DewK

Detector

Two detachable, interchangeable sensors, each measuring temperature and relative humidity

Range

Temperature 0 C to 50 C; relative humidity 0% to 100% RH

Measures and logs temperature and humidity at two points, with alarms, to document environmental conditions.

H model calibrated +/-0.125 C and +/-1.5% RH; S model +/-0.25 C and +/-2% RH. Stores about 400,000 readings.

Heise PTE-1 Now Ashcroft Inc.

Detector

Two bays for Heise HQS Quick-Select modules (HQS-1 variable-capacitance, HQS-2 piezoresistive silicon); RTD and thermocouple interface modules available

Range

Pressure modules 0.25 in. H2O through 10,000 psi; electrical 0-20 mA or 0-30 Vdc

Field reference standard for calibrating pressure gauges, transmitters and switches; also measures current, voltage and leaks.

HQS-1 accuracy +/-0.1% to +/-0.06% of span; HQS-2 +/-0.1% to +/-0.025%.

Hopewell Designs Model G10 series

Detector

1, 2 or 3 sealed source models; Cs-137 0.4 GBq (10.8 mCi) to 65 TBq (1757 Ci); Co-60 0.4 GBq (10.8 mCi) to 37 GBq (1 Ci); ISO-4037 17 degree collimator or custom; 0 - 8000X attenuator set listed as an accessory

Detects

Cs-137 and Co-60 gamma

Range

Dose rate 1 µSv/hr (0.1 mR/hr) to 100 Sv/hr (10,000 R/hr), depending on source and attenuators

Health physics instrument calibration irradiator giving uniform dose rates at the calibration bench from low to very high range.

Nominal 40 x 70 x 160 cm tall; 300 to 900 kg depending on model; 120/220 VAC, 50/60 Hz, 1500 W. Calibration traceable to NIST. Hopewell also builds the larger GC 60 and the WI-90, GI-AM241 and DS20 irradiators.

J.L. Shepherd & Associates Model 81 series (e.g. Model 81-12)

Detector

Co-60 and/or Cs-137 sealed sources in single or multiple source configurations; beam calibrators carry 1, 2, 3 or 4 sources from millicurie through kilocurie strengths, sized to the user's calibration requirements

Detects

Cs-137 and Co-60 gamma

Range

Calibration from µR/hour through kiloR/hour levels depending on the sources installed; a licensee's NRC amendment request lists the Model 81-12 with built-in Model 155 attenuator for low range (0.2 - 20 mR/hr), medium range (1 - 500 mR/hr) and high range (above 1 R/hr) calibration

Fixed beam irradiator with remote attenuators and a track for calibrating survey and monitoring instruments from low to high range.

Accessories: Model 155 remotely controlled attenuators (X-2, X-4, X-10, X-100), Model 150R remotely controlled track with table height and distance control; hardware and logic to meet 10 CFR 36. The 81-12 ranges above are from a licensee's NRC license amendment request.

J.L. Shepherd & Associates Model 89 series (Model 89-400, Model 89 LAB)

Detector

shielded self-contained box with a Cs-137 primary source; Model 89-400 is loaded with a 400 Ci Cs-137 primary source; smaller primary sources are available

Detects

Cs-137 gamma

Range

Model 89-400 (400 Ci Cs-137): continuous calibration from 100 µR/hr through 1,500 R/hr; Model 89 LAB (1 Ci Cs-137): calibrates instruments to 5 R/hr maximum

Self-contained shielded calibrator for checking survey meters from background-level readings up to high range without a calibration room.

Listed by the maker as a self-contained box calibrator; other Cs-137 source strengths are available.

Ludlum Model 500

Detector

none; pulse generator with analog high voltage meter

Detects

not applicable (electronic pulser; negative pulse about 7.0 microseconds wide, positive pulse under 2.25 microseconds)

Range

pulse rate 1 to 9,900,000 cpm (3-digit LED, 6 multipliers x0.1 to x10k), accuracy within 2% of reading; amplitude 0 mV to 5 V, positive or negative, accuracy within 10%; HV meter 0 to 2.5 kV, within 5% of reading

Bench pulser used to calibrate and check ratemeters and scalers (electronic calibration) and to read their detector high voltage.

Part number 48-1677. 95 to 135 Vac, 50 to 60 Hz; 21.6 x 29.2 x 24.1 cm (H x W x D); 4.1 kg (9 lb); series C to BNC and C to MHV adapters included. Related: 500-1 (digital HV and rate) and 500-2 (digital HV, rate and amplitude).

MGP Instruments IRD 2000 (DosiCal N version) Now Mirion Technologies

Detector

Cs-137 sealed source, 370 MBq; three exposure positions per irradiation module

Detects

gamma (Cs-137)

Range

3 mSv/h at the dosimeter; 50 µSv per check

Checks and, if needed, adjusts the response of DMC 2000, SOR and DMC 3000 dosimeters automatically.

Dose rate outside the unit under 2.5 µSv/h at 1 m; about 69 dosimeters/h per module; weight up to 80 kg.

Teledyne Hastings Instruments Model 40

Range

Inputs: up to four Hastings flow instruments (HFM, ST, FST prefixes) and up to two HFM-D; signal output 0-5 VDC

Powers and displays up to four Hastings flow meters, with a dial-in gas conversion factor for each channel.

3-1/2 digit LCD; 115/230 VAC; 15 VDC at +/-300 mA output to the flow instruments.