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LUDLUM 44-9, Manual

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Summary of Contents for 44-9

Page 1: ...LUDLUM MODEL 44 9 ALPHA BETA GAMMA DETECTOR December 2016 Serial Number PR090405 and Succeeding Serial Numbers ...

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Page 3: ... MODEL 44 9 ALPHA BETA GAMMA DETECTOR December 2016 Serial Number PR090405 and Succeeding Serial Numbers LUDLUM MEASUREMENTS INC 501 OAK STREET P O BOX 810 SWEETWATER TEXAS 79556 325 235 5494 FAX 325 235 4672 ...

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Page 5: ...ding without limitation any implied warranty of merchantability or fitness which extend beyond the description of the face there of If the product does not perform as warranted herein purchaser s sole remedy shall be repair or replacement at the option of Ludlum Measurements In no event will Ludlum Measurements be liable for damages lost revenue lost wages or any other incidental or consequential ...

Page 6: ...Model 44 9 Alpha Beta and Gamma Detector Ludlum Measurements Inc December 2016 ...

Page 7: ... 2016 Table of Contents Introduction 1 Unpacking and Repacking 2 Specifications 2 Operating Procedures 3 Tube Replacement 4 Cleaning Instructions and Precautions 5 Parts List 6 Drawings and Diagrams 7 Pancake Probe Drawing 2 206 7 Gamma Energy Response 8 Beta Efficiencies 9 ...

Page 8: ...replacement if necessary This detector operates between 850 1000 volts with a recommendation from the tube manufacturer of approximately 900 Vdc Recommended instrument input sensitivity is approximately 30 mV or higher to prevent the detector from double pulsing where the detector counts a single pulse from the instrument multiple times Caution The GM tube face can rupture above 8000 feet in altit...

Page 9: ...g material to prevent damage during shipment see Caution in Introduction section and affix appropriate warning labels to promote careful handling Every returned instrument must be accompanied by an Instrument Return Form which can be downloaded from the Ludlum website at www ludlums com Find the form by clicking the Support tab and selecting Repair and Calibration from the drop down menu Then choo...

Page 10: ...teel protective screen 79 open Temperature Range 15 to 50 C 5 to 122 F may be certified for 40 to 65 C 40 to 150 F Size 4 6 x 6 9 x 27 2 cm 1 8 x 2 7 x 10 7 in H x W x L Weight 0 5 kg 1 lb Operating Procedures CONNECTING TO AN INSTRUMENT Connect one end of the cable provided to the detector by firmly pushing the connector together while twisting clockwise a quarter of a turn until latched Repeat t...

Page 11: ...ter than or equal to the efficiency listed in the specification section of this manual 4 Instruments and detectors that meet these criteria are ready for use Failure to meet these criteria may indicate a malfunction in the detector Tube Replacement Refer to drawing 2 206 located on page 7 of this manual to assist with replacement 1 Remove the back plate by removing the three screws 2 Loosen the th...

Page 12: ...down in the housing 7 Ensure the tube is flush against the screen and tighten the set screws 8 Replace the back plate and retaining screws 9 Recalibrate the instrument and detector before use Cleaning Instructions and Precautions The detector may be cleaned externally with a damp cloth using only water as the wetting agent Do not immerse the instrument in any liquid Observe the following precautio...

Page 13: ...led Model 44 9 Alpha Beta Gamma Detector 47 1539 DETECTOR BODY 2002 109 HANDLE GRIP 7002 426 GM TUBE LND 7311 TGM N1002 01 5008 3 EA SOCKET SET SCREWS 10 34 17 8560 PENCIL CLIP 01 5237 RESISTOR 3 3M 10 7044 CONNECTOR UG706 U 4478 011 HV RED SILICONE WIRE 21 8550 PROTECTIVE SCREEN 21 9586 SNAP IN FRONT COVER 7002 1037 Model 44 9 Alpha Beta Gamma Detector ...

Page 14: ...Model 44 9 Alpha Beta and Gamma Detector Ludlum Measurements Inc Page 7 December 2016 Drawings and Diagrams ...

Page 15: ...Model 44 9 Alpha Beta and Gamma Detector Ludlum Measurements Inc Page 8 December 2016 ...

Page 16: ...Model 44 9 Alpha Beta and Gamma Detector Ludlum Measurements Inc Page 9 December 2016 ...

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