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Application: Gamma and X-ray exposure survey meter with beta response
Detection Range: 0 to 500 mSv/h (0 to 50,000 mR/hr)
Energy Response: Within 20% of true value from 40 keV to 2 MeV
Linearity: Reading within 10% of true value
Window: 7 mg/cm2 metalized polyester; with slide open, allows gamma detection to 6 keV
Window Area: 40 cm2 (6.2 in2)
Chamber Volume: 220 cm3 (13.4 in3)
Chamber Construction: Carbon coated acrylic
Side Wall: 1000 mg/cm2 aluminum and acrylic
Beta Shield: Retractable 1000 mg/cm2 phenolic slide with side button control
Beta Response: Factor of 4.8 difference between window open and closed measurements when exposed to a uranium slab
Meter Dial: 0 to 5 mR/hr, BAT TEST
Meter: 6.4 cm (2.5 in.) arc, 1 mA, pivot-and-jewel suspension
Response Time: Approximately 5 s for 90% of final meter deflection on the x1 and x10 scales, and 3 s on the x100, x1k and x10k scales
Compensation: Automatically corrects for temperature and pressure changes in atmosphere
Pressure Compensation Range: 70 to 106 kPa (20.7 to 31.3 in Hg)
Temperature Range: -20 to 50 °C (-4 to 122 °F), temperature compensation maintains calibration within 15% of 25 °C (77 °F) reading
Power: 2 each “D” cell batteries housed in a sealed externally accessible compartment
Battery Life: 400 hours
Construction: Cast and drawn aluminum with beige powder coating
Size (H x W x L): 23.4 x 8.9 x 21.6 cm (9.2 x 3.5 x 8.5 in.) including instrument handle
Weight: 1.9 kg (4.2 lb) including batteries
