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Ludlum Measurements 43-147 Manual Download Page 10

Models 43-147       

Technical Manual   

 

Section 4

 

Ludlum Measurements, Inc.

 

Page 4-2 

March 2019 

 

 
Reference  

Description 

Part Number 

 

 BOARD 

Completely Assembled 1 1/8 inch  

 

 

Voltage Divider Board  

5435-533 

 

C1- C3  

0.01uF, 200V

 

04-5725 

C4 

 

0.0047uF, 3KV 

04-5958

 

 

R1 

 

10M, 1/8W, 1% 

12-7996 

R2 

 

7.5M, 1/8W, 5% 

12-7971 

R3-R10  

10M, 1/8W, 1% 

12-7996

R11 

 

2.21M, 1/8W, 1% 

12-7002 

 

R12-R13 

6.04M, 1/8W, 1% 

12-7071 

 

 

   

 

* 

 

SOCKET 1 1/8” PCB MOUNT  4435-103 

W1 

 

SILICONE WHITE #22 HV 

21-8543 

W4 

 

SILICONE BLACK #22 GND 

21-8552 

 

1 1/8-inch Voltage 
Divider Board, 
Drawing 435 × 1700 

CAPACITORS 

RESISTORS 

MISCELLANEOUS

 

Summary of Contents for 43-147

Page 1: ...LUDLUM MODEL 43 147 ALPHA BETA DETECTOR March 2019 ...

Page 2: ...LUDLUM MODEL 43 147 ALPHA BETA DETECTOR March 2019 ...

Page 3: ...anty 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 damages arising from the purchase use or...

Page 4: ... Safety Considerations 3 Environmental Conditions for Normal Use 3 1 Cleaning Instructions and Precautions 3 1 Returning for Repair or Calibration 3 1 Parts List 4 Model 43 147 Assembly Drawing 393 x 288A 4 1 1 8 inch Voltage Divider Board Drawing 435 x 1700 4 2 Drawings and Diagrams 5 ...

Page 5: ... 2223 Model 2224 or Model 2360 instruments provide the necessary circuitry for simultaneous alpha beta discrimination A Zinc Sulfide ZnS Ag scintillator is used for detecting alpha particles and a thin plastic scintillator is employed for detecting beta radiation The scintillation material is covered by metallized polyester to reduce light response limiting excessive background counts The Model 43...

Page 6: ...k 6 5 mm 0 26 in square openings 88 open Screen Outer Dimensions 225 4 x 113 7 mm 8 875 x 4 75 in L x W Window 1 2 mg cm2 metalized polyetser Window Area Active area approximately 200 cm2 Open area approximately 176 cm2 Efficiency 4 typically 13 for 99 Tc 20 for 90 Sr 90 Y and 20 for 239 Pu Background in a 10µR hr field Alpha 3 cpm or less Beta 400 cpm or less Cross Talk Alpha to Beta 10 Beta to A...

Page 7: ... Gamma Sensitivity 15 20 cpm µR hr 137 Cs Dead Time typically 5 µsec or less Connector Series C unless otherwise specified Temperature Range 20 to 50 C 4 to 122 F Overall Size 10 7 x 12 1 x 35 6 cm 4 2 x 4 75 x 14 in H x W x L plus feet Weight 0 7 kg 1 0 lb Construction aluminum housing with beige powder coat finish ...

Page 8: ...tector in any liquid Do not attempt to clean a detector that is attached to an instrument providing high voltage Disconnect the detector cable before cleaning Returning for Repair or Calibration To return an instrument for repair or calibration provide sufficient packing material to prevent damage during shipment Every returned instrument must be accompanied by an Instrument Return Form which can ...

Page 9: ...ea Window Frame 7393 295 1 ea Face Ring 7393 291 1 ea Square Screen external snap on screen 7393 292 1 ea Backup w Plastic Scintillator and ZnS 4393 300 1 ea Plastic Scintillator EJ444L 2 94 x5 91x 0 010 7393 294 1 ea Photomultiplier Tube 01 5238 1 ea Voltage Divider Board 5435 182 Foil NETIC 01 5019 Foil CO NETIC 01 5026 9 ea Sponge 7002 065 04 1 ea Tube Holder Assembly 2393 117 1 ea Gasket 7393 ...

Page 10: ...Board 5435 533 C1 C3 0 01uF 200V 04 5725 C4 0 0047uF 3KV 04 5958 R1 10M 1 8W 1 12 7996 R2 7 5M 1 8W 5 12 7971 R3 R10 10M 1 8W 1 12 7996 R11 2 21M 1 8W 1 12 7002 R12 R13 6 04M 1 8W 1 12 7071 SOCKET 1 1 8 PCB MOUNT 4435 103 W1 SILICONE WHITE 22 HV 21 8543 W4 SILICONE BLACK 22 GND 21 8552 1 1 8 inch Voltage Divider Board Drawing 435 1700 CAPACITORS RESISTORS MISCELLANEOUS ...

Page 11: ...ge 5 1 March 2019 Drawings and Diagrams Model 43 147 Assembly View Drawing 393 288 Model 43 147 Mylar Window Drawing 393 x 288A 1 1 8 inch Voltage Divider Circuit Board Drawing 435 1700 1 1 8 inch Voltage Divider Component Layout Drawing 435 1701 2 sheets Section 5 ...

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