Model 43-44
Alpha Air Proportional Detector
PN: 47-1169

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: 76 cm² active; 50 cm² open
SIZE: 4" (10.2 cm) H 2.5" (6.4 cm) W 9" (22.9 cm) L
WEIGHT: 1 lb (0.5 kg)