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Indicated Use: Neutron dose rate
Detector: 3He proportional detector, 1.6 x 2.5 cm (0.6 x 1.0 in.) (D x L), surrounded by a 19.5 cm (7.7 in.) diameter polyethylene sphere with internal borated layer
Measurement Range: 0 to 100 mSv/h (0 to 10,000 mrem/hr)
Sensitivity (bare AmBe neutrons): Typically 10 cpm per µSv/h (100 cpm per mrem/hr)
Energy Response: Provides an approximate inverse RPG curve for neutrons from thermal through 7 MeV, provides response up to 12 MeV
Linearity: Reading within 10% of actual value
Gamma Rejection (137Cs gamma): < 10 cpm through 0.1 Sv/hr (10 R/hr)
Meter Dial: 0 - 10 mrem/hr, 0 - 2.5 kV, BAT TEST
(Meter Face tab lists other available meter faces)
Operating Voltage: Approximately 1200 Vdc
High Voltage: Adjustable from 400 to 2500 V (can be read on meter)
Threshold: -2 mV
Discriminator: Adjustable from 1 to 50 mV
Working Environment: Splashproof shields for outdoor use
Temperature Range: -20 to 50 °C (-4 to 122 °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): 38.9 x 19.6 x 22.9 cm (15.3 x 7.7 x 9 in.)
Weight: 5.4 kg (12 lb) with batteries
