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LUDLUM MODEL 44-2 GAMMA SCINTILLATOR February 2018 Serial Number PR361009 and Succeeding Serial Numbers...
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LUDLUM MODEL 44-2 GAMMA SCINTILLATOR February 2018 Serial Number PR361009 and Succeeding Serial Numbers LUDLUM MEASUREMENTS, INC. 501 OAK STREET, P.O. BOX 810 SWEETWATER, TEXAS 79556 325-235-5494, FAX: 325-235-4672...
STATEMENT OF WARRANTY Ludlum Measurements, Inc. warrants the products covered in this manual to be free of defects due to workmanship, material, and design for a period of twelve months from the date of delivery. The calibration of a product is warranted to be within its specified accuracy limits at the time of shipment.
Table of Contents Introduction Unpacking and Repacking Specifications Operating Procedures Safety Considerations Parts List, Drawings and Diagrams Energy Response Curve Ludlum Measurements, Inc. February 2018...
100keV range and under-responding by a factor of 0.5 above 1 MeV when normalized to The Model 44-2 will operate with any Ludlum instruments or equivalent instruments that provide 500–1200 volts. The recommended instrument input sensitivity is approximately 10 mV or higher.
Model 44-2 Gamma Scintillator Note: If the detector is used in a manner not intended by the manufacturer, the detector may not function properly. Unpacking and Repacking Remove the calibration certificate or detector functional check certificate and place it in a secure location. Remove the detector(s) and accessories (if applicable) and ensure that all items listed on the packing list are in the carton.
Model 44-2 Gamma Scintillator Specifications : general-purpose survey meters, Compatible Instruments ratemeters and scalers : typically 175 cpm per µR/hr ( Cs gamma) Sensitivity approximately 10 µs, typically limits linear range to Dead Time: 5 mR/hr (50 µSv/h) with non-corrected measurements, or to 50 mR/hr (500 µSv/h) with...
Model 44-2 Gamma Scintillator 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 one quarter of a turn until latched. Repeat the process in the same manner with the other end of the cable and the instrument.
Model 44-2 Gamma Scintillator 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 (5 to 122 °F); May be certified for operation from -40 to 65 °C (-40 to 150 °F).
Model 44-2 Gamma Scintillator Parts List, Drawings and Diagrams Model 44-2 Gamma Scintillator Reference Description Part Number UNIT Completely Assembled Model 44-2 Alpha-Beta-Gamma Detector 47-1532 1 EA DETECTOR BODY 2002-084-01 1 EA END CAP 7002-505 1 EA 2.5 x 2.5 cm (1 x 1 in.) NaI CRYSTAL...
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Model 44-2 Gamma Scintillator Ludlum Measurements, Inc. Page 7 February 2018...
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Model 44-2 Gamma Scintillator Reference Description Part Number 3.8 cm (1.5 in.) Tube Socket Board 1 EA CIRCUIT BOARD 5002-370 1 EA CAP 0.01 µF 2kv 04-5525 11 EA RES 10 M, ¼ W, 1% 12-7996 1 EA RES 1 M, ¼ W, 1% 12-7844 Ludlum Measurements, Inc.
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Model 44-2 Gamma Scintillator 3.8 cm (1.5 in.) Tube Socket Board - Schematic Ludlum Measurements, Inc. Page 9 February 2018...
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Ludlum Measurements, Inc. Page 10 February 2018...
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