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Summary of Contents for Ludlum Measurements 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 RETURN OF GOODS TO MANUFACTURER If equipment needs to be returned to Ludlum Measurements, Inc. for repair or calibration, please send to the address below. All shipments should include documentation containing return shipping address, customer name, telephone number, description of service requested, and all other necessary information.
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Page 4: Table Of Contents
Safety Considerations Environmental Conditions for Normal Use Cleaning Instructions and Precautions Returning for Repair or Calibration Parts List Model 43-147 Assembly, Drawing 393 x 288A 1/8-inch Voltage Divider Board, Drawing 435 x 1700 Drawings and Diagrams Ludlum Measurements, Inc. August 2015... -
Page 5: Introduction
The scintillation material is covered by metallized polyester to reduce light response, limiting excessive background counts. The Model 43-147 window is protected by an 88% open square-hole screen. The photomultiplier tube (PMT) and crystal assembly may easily be removed for repair. -
Page 6: Specifications
Models 43-147 Technical Manual Section 2 Section Specifications Photomultiplier Tube : 2.9 cm (1.1 in.) diameter; magnetically shielded : Zinc Sulfide [ZnS (Ag)] deposited on a 0.25 mm Scintillator Material (0.010 in.) rectangular plastic scintillator 0.79 mm (0.03 in.) thick, 6.5 mm (0.26 Removable Protective Screen: in.) square openings, 88% open... - Page 7 Models 43-147 Technical Manual Section 2 : 60 megohm Dynode String Resistance : 15-20 cpm/µR/hr ( Gamma Sensitivity : typically 5 µsec or less Dead Time : Series “C” unless otherwise specified Connector : -20 to 50 °C (-4 to 122 °F) Temperature Range : 10.7 x 12.1 x 35.6 cm (4.2 x 4.75 x 14 in.) (H x W x L),...
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Page 8: Safety Considerations
Models 43-147 Technical Manual Section 3 Section Safety Considerations Environmental Conditions for Normal Use Indoor or outdoor use No maximum altitude Temperature range of -20 to 50°C (-4 to 122 °F) Maximum relative humidity of less than 95% (non-condensing) Cleaning Instructions and Precautions The detectors specified in this manual may be cleaned externally with a damp cloth, using only water as the wetting agent. -
Page 9: Parts List
Models 43-147 Technical Manual Section 4 Section Parts List Reference Description Part Number For Model 43-147 UNIT Completely Assembled Assembly View, Model 43-147 Drawing 393 x 288 200 cm Alpha /Beta Scintillator 47-4092 Quantity Description Part Number 1 ea Welded Body Assembly... - Page 10 Models 43-147 Technical Manual Section 4 1 1/8-inch Voltage Divider Board, Reference Description Part Number Drawing 435 × 1700 BOARD Completely Assembled 1 1/8 inch Voltage Divider Board 5435-533 CAPACITORS C1- C3 0.01uF, 200V 04-5725 0.0047uF, 3KV 04-5958 RESISTORS 10M, 1/8W, 1% 12-7996 7.5M, 1/8W, 5%...
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Page 11: Drawings And Diagrams
Section 5 Section 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) Ludlum Measurements, Inc.
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