Ludlum Model 43-44 Alpha Detector Bicron These have some shielding around

These have some shielding around the detector to reduce background

An audible alarm will sound when contamination exceeds the given alarm setpoint

040B is a low-energy gamma (e

digital readings

Ludlum Model 43-44 Alpha Detector Bicron These have some shielding aroundIndicated Use Alpha survey Detector Type Air proportional Window 0. 4 mg cm2 aluminized mylar Window Area Active: 76 cm2 (11. 8 in2) Open: 50 cm2 (7. 8 in2) Efficiency (4) 239Pu: 8% Operating Voltage Altitude sensitive Sea Level: 2050 V 610 m (2000 ft): 2000 V 1524 m (5000 ft): 1925 V 2134 m (7000 ft): 1875 V Counter Threshold Setting 1. 5 to 2 mV (typical) Working Environment Desiccant vented chamber for outdoor use Size (H x W x L) 10. 2 x 6. 4 x