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Summary of Contents for LUDLUM 44-150-1
- Page 1 LUDLUM MODEL 44-150-1 GAMMA GM DETECTOR September 2021...
- Page 2 LUDLUM MODEL 44-150-1 GAMMA GM DETECTOR September 2021 LUDLUM MEASUREMENTS, INC. 501 OAK STREET, P.O. BOX 810 SWEETWATER, TEXAS 79556 325-235-5494, FAX: 325-235-4672...
- Page 3 Model 44-150-1 Low-Level Gamma GM Detector Model 44-150-1 Ludlum Measurements, Inc. September 2021...
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Page 4: Table Of Contents
Model 44-150-1 Low-Level Gamma GM Detector Table of Contents Introduction Unpacking and Repacking Specifications Operating Procedures Safety Considerations Parts List Ludlum Measurements, Inc. September 2021... -
Page 5: Introduction
Model 44-150-1 Low-Level Gamma GM Detector Introduction The Model 44-150-1 is a low-level Geiger-Mueller (GM) gamma survey detector that can be used with any portable ratemeter, scaler instrument, or area monitor that provides 550 Vdc with an input sensitivity of 30 +10 mV. -
Page 6: Unpacking And Repacking
If multiple detectors are included, refer to the calibration certificates for serial number (SN) matches. The Model 44-150-1 serial number is located on the side of the detector. To return an instrument or detector for repair or calibration, provide sufficient packing material to prevent damage during shipment. -
Page 7: Specifications
Model 44-150-1 Low-Level Gamma GM Detector Specifications 550 V RECOMMENDED OPERATING VOLTAGE: energy dependent ENERGY RESPONSE (60 keV-3 MeV): 4000 cpm/mR/hr SENSITIVITY ( Cs Gamma): 48 cpm BACKGROUND: 30 mV +10 mV INPUT SENSITIVITY: typically 50 microseconds DEAD TIME: 0.1 mR/hr to 250... -
Page 8: Operating Procedures
Model 44-150-1 Low-Level Gamma GM Detector Operating Procedures ONNECTING TO AN NSTRUMENT Connect one end of the cable provided to the detector by firmly pushing the connector together while twisting clockwise ¼ turn until latched. Repeat the process in the same manner with the other end of the cable and the instrument. -
Page 9: Safety Considerations
Model 44-150-1 Low-Level Gamma GM Detector Safety Considerations NVIRONMENTAL ONDITIONS FOR ORMAL 1. Indoor or outdoor use (in a dry environment) 2. No maximum altitude 3. Temperature range of -20 to 50 °C (-4 to 122 °F); May be certified for operation from -40 to 65 °C (-40 to 150 °F). -
Page 10: Parts List
Model 44-150-1 Low-Level Gamma GM Detector Parts List Reference Description Part Number UNIT Completely Assembled Model 44-150-1 Gamma Detector 47-3335 4 EA GM TUBE (LND 71210) 01-5236 4 EA RES – 3.3 MEG ¼ W, 5% CR 25 10-7094 1 EA...
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