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Ludlum Measurements 44-2 Manual

Ludlum Measurements 44-2 Manual

Gamma scintillator
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LUDLUM MODEL 44-2
GAMMA SCINTILLATOR
February 2018
Serial Number PR361009 and Succeeding
Serial Numbers

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Summary of Contents for Ludlum Measurements 44-2

  • Page 1 LUDLUM MODEL 44-2 GAMMA SCINTILLATOR February 2018 Serial Number PR361009 and Succeeding Serial Numbers...
  • Page 3 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...
  • Page 5: Statement Of Warranty

    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.
  • Page 7: Table Of Contents

    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...
  • Page 8: Introduction

    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.
  • Page 9: Unpacking And Repacking

    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.
  • Page 10: Specifications

    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...
  • Page 11: Operating Procedures

    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.
  • Page 12: Safety Considerations

    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).
  • Page 13: Parts List, Drawings And Diagrams

    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...
  • Page 14 Model 44-2 Gamma Scintillator Ludlum Measurements, Inc. Page 7 February 2018...
  • Page 15 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.
  • Page 16 Model 44-2 Gamma Scintillator 3.8 cm (1.5 in.) Tube Socket Board - Schematic Ludlum Measurements, Inc. Page 9 February 2018...
  • Page 17 Ludlum Measurements, Inc. Page 10 February 2018...