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m44-150-series

m44-150-series

m44-150-1-web

44-150-3_angle

Model 44-150 Series

High-Sensitivity Gamma Detector

The Model 44-150-1 and 44-150-3 are high-sensitivity Gieger-Mueller (GM) detectors for low-level gamma radiation. They can be used with survey meters, scalers, and area monitors.

Specifications
Documents

Specifications
Documents

Specifications

Model	Model 44-150-1	Model 44-150-3
Part Number	47-3335-1	47-4039
Indicated Use	High-sensitivity gamma survey	High-sensitivity gamma survey
Suggested Instruments	General purpose survey meters, Scalers, Area monitors	General purpose survey meters, Scalers, Area monitors
Detector Type	4 ea. halogen quenched GM tubes, 30 mg/cm² stainless steel	3 ea. energy-compensated, halogen quenched GM tubes, 30 mg/cm² stainless steel
Linear Range	*Without DTC: 1 to 500 µSv/h (0.1 to 50 mR/hr) With DTC:* 1 to 2500 µSv/h (0.1 to 250 mR/hr)	*Without DTC: 0.1 to 80 µSv/h (0.01 to 8 mR/hr) With DTC:* 0.1 to 800 µSv/h (0.01 to 80 mR/hr)
Typical Sensitivity (¹³⁷Cs gamma)	400 cpm per µSv/h (4000 cpm per mR/hr)	1350 cpm per µSv/h (13,500 cpm per mR/hr)
Energy Response	Energy dependent	Within 30% from 60 keV to 1.3 MeV
Typical Background (10 µR/hr field)	48 cpm	300 cpm
Typical Dead Time	50 µs	50 µs
Operating Voltage	550 Vdc	900 Vdc
Input Sensitivity	30 mV ± 10 mV	30 mV ± 10 mV
Temperature Range	-20 to 50 °C (-4 to 122 °F)	-15 to 50 °C (5 to 122 °F)
Connector	Series "C", unless a waterproof detector. Other connectors are available upon request.	Series "C"
Construction	Aluminum housing with beige powder coat finish	Aluminum housing with beige powder coat finish
Size (Dia. x L)	4.8 x 11.7 cm (1.9 x 4.6 in.)	4.8 x 36.2 cm (1.9 x 14.3 in.)
Weight	0.17 kg (0.37 lb)	0.9 kg (2 lb)

*Dead Time Correction, available on some instruments

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