Features:

• INDICATED USE: alpha survey
  WORKING ENVIRONMENT: splashproof shields and desiccant-vented chamber for outdoor use
  SUGGESTED INSTRUMENTS: Models 12, 16, 18, 2000, 2200, 2221, 2241, 2350
  DETECTOR TYPE: air proportional
  WINDOW: 0.4 mg/cm² aluminized mylar
  WINDOW AREA: 320 cm² (49.6 in²) active; 253 cm² (39.2 in²) open
  EFFICIENCY (4p): 10%-239Pu
  BACKGROUND: 3 cpm or less
  OPERATING VOLTAGE: altitude sensitive
  sea level - 2050 volts
  610 m (2000 ft) - 2000 volts
  1524 m (5000 ft) - 1925 volts
  2134 m (7000 ft) - 1875 volts
  COUNTER THRESHOLD SETTING: 2 mV
  CONSTRUCTION: anodized aluminum body with aluminum screen (65% open)
  CONNECTOR: Series "C" (others available)
  TEMPERATURE RANGE: -20 to 50 °C (-4 to 122 °F), may be certified for operation from -40 to 65 °C (-40 to 150 °F)
  SIZE: 10.2 x 14 x 23 cm (4 x 5.5 x 9 in.) (H x W x L)
  WEIGHT: 1.59 kg (3.5 lb)

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