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Model 44-150-3 Gamma GM Detector 

 

Ludlum Measurements, Inc. 

Page 2 

May 2021 

 

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.  If  multiple 

detectors  are  included,  refer  to  the  calibration  certificates  for 
serial  number  (SN)  matches.  The  Model  44-150-3  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  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  choose  the 

appropriate Repair and Calibration division where you will find 
a link to the form. 

Содержание 44-150-3

Страница 1: ...LUDLUM MODEL 44 150 3 GAMMA GM DETECTOR May 2021 ...

Страница 2: ...LUDLUM MODEL 44 150 3 GAMMA GM DETECTOR May 2021 LUDLUM MEASUREMENTS INC 501 OAK STREET P O BOX 810 SWEETWATER TEXAS 79556 325 235 5494 FAX 325 235 4672 ...

Страница 3: ...Model 44 150 3 Gamma GM Detector Ludlum Measurements Inc May 2021 Model 44 150 3 ...

Страница 4: ...mma GM Detector Ludlum Measurements Inc May 2021 Table of Contents Introduction 1 Unpacking and Repacking 2 Specifications 3 Operating Procedures 4 Safety Considerations 5 Parts List 6 Energy Response Curve 7 Drawing 8 ...

Страница 5: ...ler GM gamma survey detector that can be used with any portable ratemeter scaler instrument or area monitor that provides 900 Vdc with an input sensitivity of 30 10 mV Note The detector does not contain any consumable materials Note If the detector is used in a manner not intended by the manufacturer the detector may not function properly ...

Страница 6: ...SN matches The Model 44 150 3 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 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 websi...

Страница 7: ...00 cpm INPUT SENSITIVITY 30 mV 10 mV DEAD TIME typically 50 microseconds LINEARITY WITH DEAD TIME CORRECTION 0 01 mR hr to 80 mR hr LINEARITY WITHOUT DEAD TIME CORRECTION 0 01 mR hr to 8 mR hr TUBE 30 mg cm2 stainless steel Halogen quench GM TEMPERATURE RANGE 15 to 50 C 5 to 122 F SIZE 4 8 x 36 2 cm 1 9 x 14 3 in Dia x L CONSTRUCTION aluminum housing with beige powder coat finish WEIGHT 0 9 kg 2 l...

Страница 8: ... at the proper setting for the detector 900 volts 2 Connect the detector to the instrument and check for a proper background reading 300 cpm 3 Expose the detector to a check source and verify that the instrument indicates within 20 of the check source reading from the last calibration Alternatively expose the detector to a source of known value and verify that the detector detects greater than or ...

Страница 9: ...condensing 5 Pollution Degree 3 Occurs when conductive pollution or dry nonconductive pollution becomes conductive due to condensation This is typical of industrial or construction sites 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 precautions wh...

Страница 10: ...TGM 01 5015 3 EA SOCKET AMPH 78 S3S 01 5024 3 EA RES 3 3 MEG W 5 CR 25 10 7044 1 EA 0 RING 2 029 16 8317 1 EA LUG 14 N L 1HL 1497 18 8766 1 EA Model 44 150 3 BODY ASSY 2002 1130 25 IN WIRE TEFLON WHT 22 HV 21 8993 24 IN WIRE 22 BLACK UL1430 21 9413 11 7 IN SHRINK 3 16 INCH BLACK 22 9504 1 EA CONNECTOR SERIES C 4478 011 8 EA Model 44 3 44 2 43 5 SPNG 7002 029 05 2 EA Model 44 150 3 TIN SLEEVE 7002 ...

Страница 11: ...l 44 150 3 Gamma GM Detector Ludlum Measurements Inc Page 7 May 2021 0 0 50 0 100 0 150 0 10 100 1000 10000 Model 44 150 3 Ambient Dose Equivalent Energy Response Relative to Cs 137 Ambient Dose Equivalent ...

Страница 12: ...Model 44 150 3 Gamma GM Detector Ludlum Measurements Inc Page 8 May 2021 ...

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