Ludlum Model 44-6 Sidewall G-M

The Model 44-6 is a sidewall G-M detector with a rotary beta shield for general purpose survey.


Indicated Use: Beta gamma survey
Detector: 30 mg/cm² stainless steel wall halogen quenched G-M
Sensitivity: Typically 1200 cpm/mR/hr (Cs-137 gamma )
Beta Cut-Off: Approximately 200 keV (window open )
Energy Response: Energy dependent
Dead Time: Typically 95 microseconds
Compatible Instruments: General purpose survey meters, ratemeters, and scalers
Operating Voltage: 900 volts
Connector: Series "C" (others available )
Construction: 1000 mg/cm² polished stainless steel housing with rotary beta window 
Temperature Range: -4° F(-20° C) to 122° F(50° C) 
May be certified for operation from -40° F(-40° C) to 150° F(65° C)
Size: 1.2" (3.0 cm) diameter X 6.5" (16.5 cm)L
Weight: 1 lb (0.5kg)                                       
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Energy Response Characteristics (Window Open)


Energy Response Characteristics (Window Closed)