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800-620-8803 
Yet another “Bullet Proof” hand held meter made by Ludlum. Not some plastic housing meter that is just waiting to crack after the first drop. This general purpose, handheld analog ratemeter supports operating two separate radiation detectors. A switch allows the user to select between the internally mounted GM detector with an exposure range of 0–2000 mR/hr (0–20 mSv/h) or an external GM or scintillator detector of choice.
Add a Counts.Pro for $499 to digitize your surveys and turn your meter into a digital scaler/ratemeter/cloud connected GPS datalogger! Take your meter to the next level with Counts.Pro
The aluminum cast instrument housing, with its separate battery compartment and accompanying metal handle, offer an industrial robustness and quality that promote long-lasting protection and instrument life. The front-panel controls include a rotary switch for selecting the five-decade range and instrument shut-off, an audio on/off switch, a fast/slow response switch, a high voltage display button, and a battery test button.
The analog meter face comes in a variety of options to support the measurement units and ranges for the additional external detector selected. Call if you want a specific meter face.
This meter, like everything else we sell comes with our standard 30 day unconditional warrantee.
This is a USED METER. The Meter in the Photo is a STOCK PHOTO and is not likely to be the actual meter you will be getting. Ask and we will send you the serial number and photo of the actual meter. Some of these meters have scratches, but all of them are fully functional and will meet the original factory specifications for use.
Features:
Internal Detector
Adjustable HV to accomodate a variety of probes.
Robust design that has stood the test of time.
Specifications
APPLICATION: alpha, beta, and gamma surveying
COMPATIBLE DETECTORS: GM, scintillation
DETECTOR CHANNELS: x0.1 through x100 range settings readout the external detector channel, x1000 reads out the internal GM detector
EXTERNAL DETECTOR: any GM or scintillator operating on 900 VDC (see available list)
INTERNAL DETECTOR: energy compensated GM, 0–20 mSv/h (0–2000 mR/hr), used with x1000 scale only, sensitivity: 200 cpm/mR/hr
ENERGY RESPONSE: within 15% of true value between 60 keV-3 MeV (internal detector only)
LINEARITY: reading within 10% of true value with detector connected
LINEARITY: reading within 10% of true value with detector connected
HIGH VOLTAGE: 900 volts
THRESHOLD: -40 mV to 10 mV
CONNECTOR: series “C”
THRESHOLD: -40 mV to 10 mV
CONNECTOR: series “C”
METER: 6.4 cm (2.5 in.) arc, 1 mA analog type
METER DIAL: typically 0 to 2 mR/hr and cpm, BAT TEST (see list of others available)
CONTROLS:
Rotary Selector Switch: switches instrument to Off or ranges: x0.1, x1, x10, x100 x1000
Response Switch: toggles between FAST (4 seconds) or SLOW (22 seconds) from 10% to 90% of final reading
Reset Push Button: to zero meter
Battery Push Button: checks battery status
Audio Switch: for audio on/off, built-in unimorph speaker, greater than 60 dB at 0.6 meters (2 ft)
Response Switch: toggles between FAST (4 seconds) or SLOW (22 seconds) from 10% to 90% of final reading
Reset Push Button: to zero meter
Battery Push Button: checks battery status
Audio Switch: for audio on/off, built-in unimorph speaker, greater than 60 dB at 0.6 meters (2 ft)
POWER: 2 each “D” cell batteries (housed in an externally accessible sealed compartment)
BATTERY LIFE: typically greater than 2000 hrs (battery condition can be checked on meter)
CONSTRUCTION: cast and drawn aluminum with beige powder coat
TEMPERATURE RANGE: -20 to 50 °C (-4 to 122 °F)
RELATIVE HUMIDITY: < 95%
SIZE: 16.5 x 8.9 x 21.6 cm (6.5 x 3.5 x 8.5 in.) (H x W x D)
WEIGHT: 1.6 kg (3.5 lb), including batteries
Specifications
APPLICATION: alpha, beta, and gamma surveying
COMPATIBLE DETECTORS: GM, scintillation
DETECTOR CHANNELS: x0.1 through x100 range settings readout the external detector channel, x1000 reads out the internal GM detector
EXTERNAL DETECTOR: any GM or scintillator operating on 900 VDC (see available list)
INTERNAL DETECTOR: energy compensated GM, 0–20 mSv/h (0–2000 mR/hr), used with x1000 scale only, sensitivity: 200 cpm/mR/hr
ENERGY RESPONSE: within 15% of true value between 60 keV-3 MeV (internal detector only)
LINEARITY: reading within 10% of true value with detector connected
LINEARITY: reading within 10% of true value with detector connected
HIGH VOLTAGE: 900 volts
THRESHOLD: -40 mV to 10 mV
CONNECTOR: series “C”
THRESHOLD: -40 mV to 10 mV
CONNECTOR: series “C”
METER: 6.4 cm (2.5 in.) arc, 1 mA analog type
METER DIAL: typically 0 to 2 mR/hr and cpm, BAT TEST (see list of others available)
CONTROLS:
Rotary Selector Switch: switches instrument to Off or ranges: x0.1, x1, x10, x100 x1000
Response Switch: toggles between FAST (4 seconds) or SLOW (22 seconds) from 10% to 90% of final reading
Reset Push Button: to zero meter
Battery Push Button: checks battery status
Audio Switch: for audio on/off, built-in unimorph speaker, greater than 60 dB at 0.6 meters (2 ft)
Response Switch: toggles between FAST (4 seconds) or SLOW (22 seconds) from 10% to 90% of final reading
Reset Push Button: to zero meter
Battery Push Button: checks battery status
Audio Switch: for audio on/off, built-in unimorph speaker, greater than 60 dB at 0.6 meters (2 ft)
POWER: 2 each “D” cell batteries (housed in an externally accessible sealed compartment)
BATTERY LIFE: typically greater than 2000 hrs (battery condition can be checked on meter)
CONSTRUCTION: cast and drawn aluminum with beige powder coat
TEMPERATURE RANGE: -20 to 50 °C (-4 to 122 °F)
RELATIVE HUMIDITY: < 95%
SIZE: 16.5 x 8.9 x 21.6 cm (6.5 x 3.5 x 8.5 in.) (H x W x D)
WEIGHT: 1.6 kg (3.5 lb), including batteries
