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Application: Low-level (μR) gamma survey
Detector (D x L): NaI(Tl) scintillator, 2.5 x 2.5 cm (1 x 1 in.)
Detection Range: Background to 500 µR/hr
Sensitivity (137Cs gamma): Approximately 17,500 cpm per μSv/h (175 cpm per μR/hr)
Energy Response: Energy dependent (see Energy Response Curve)
Linearity: Reading ± 10% of true value
Meter Dial: 0 - 5 µSv/h (0 - 500 μR/hr) dual colored logarithmic scale, BAT TEST (Meter Faces tab lists other available meter faces)
Meter: 6.4 cm (2.5 in.) arc, 1 mA analog type
Response: Dependent on number of counts present (typically not greater than 7 s from 10% to 90% of final reading)
Alarm: Indicated by red lamp and audible tone (alarm audio overrides the audio ON/OFF switch)
Alarm Range: Zero to off-scale
Working Environment: Splashproof shields for outdoor use
Temperature Range: -20 to 50 °C (-4 to 122 °F)
May be certified for operation from -40 to 65 °C (-40 to 150 °F)
Power: 2 each “D” cell batteries (housed in sealed compartment that is externally accessible)
Battery Life: Typically 600 hours with alkaline batteries (battery condition can be checked on meter)
Construction: Cast and drawn aluminum with beige powder coat finish
Size (H x W x L): 19.8 x 8.9 x 21.6 cm (7.8 x 3.5 x 8.5 in.) with handle
Weight: 2.1 kg (4.5 lb), including batteries
