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Application: Gamma surveying in potentially explosive environments
Detector: Internally housed energy compensated GM detector
Detection Range: 0.1 mR/hr to 1.0 R/hr
Linearity: Reading within 10% of true value with detector connected
Typical Sensitivity (137Cs): 100 cpm per mR/hr
Meter Dial: 0 to 10 mR/hr, BAT TEST
Meter: 6.4 cm (2.5 in.) arc, 1 mA analog type
Controls :
Rotary Selector: Switches between: Instrument off, Battery check, Ranges: ×0.1, ×1, ×10, ×100
Response Switch: Toggles between FAST (4 s) or SLOW (22 s) from 10% to 90% of final reading
Reset Push Button: Zero meter
Audio Switch: Audio on/off, Built-in unimorph speaker, greater than 60 dB at 0.6 m (2 ft)
Calibration Controls: Accessible from front of instrument (protective cover provided)
Temperature Range: -20 to 50 °C (-4 to 122 °F)
Environmental Rating: NEMA 3R, constructed for either indoor or outdoor use to provide a degree of protection against dirt, rain, sleet, or snow
Relative Humidity: Maximum 95% (non-condensing)
Power: Two each “D” cell batteries (see Warning note below). Batteries are housed in an externally accessible sealed compartment.
Battery Life: Typically greater than 2000 hours with alkaline batteries (battery condition can be checked on meter)
Construction: Cast and drawn aluminum with beige powder coat
Size (H x W x L): 16.5 x 8.9 x 21.6 cm (6.5 x 3.5 x 8.5 in.) including handle
Weight: 1.6 kg (3.5 lb), including batteries
