Model 43-44-1
Alpha Air Proportional Detector
PN: 47-2385

INDICATED USE: Alpha survey
WORKING ENVIRONMENT: Splashproof shields and desiccant vented chamber for outdoor use
WINDOW: 0.4 mg/cm² aluminized mylar
EFFICIENCY (4pi): 8%-²³⁹Pu
SUGGESTED INSTRUMENTS: Models 12, 16, 18, 2000, 2200, 2221, 2241, 2350-1, 177-61
OPERATING VOLTAGE: Altitude sensitive
Sea Level - 2050 volts
2000 feet - 2000 volts
5000 feet - 1925 volts
7000 feet - 1875 volts
COUNTER THRESHOLD SETTING: 1.5-2.0 mV
WINDOW AREA: 154 cm² active; 100 cm² open
SIZE: 4" (10.2 cm) H 4.5" (11.4 cm) W 10.3" (26 cm) L
WEIGHT: 1.6 lb (0.7 kg)

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