• Geiger Muller Tube - Edulab

  • 261-007
  • Out of Stock
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  • £273.28excluding VAT

    £327.94 including VAT

  • This is a halogen quenched metal tube with a thin end window, for detecting alpha, beta and gamma radiation and recommended as a general purpose tube for use with general school radioactive sources. A plastic cap is fitted over the vents for protection.

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Technical Specification

General Specifications  
Gas filling Ne +Halogen
Cathode material 446 Stainless Steel
Maximum length (inch/mm) 2.71/68.8
Effective length (inch/mm) 1.5/38.0
Maximum diameter (inch/mm) 0.98/25.0
Effective diameter (inch/mm) 0.78/19.8
Connector B2A
Operating temperature range °C -40 to +75
Window Specifications  
Areal density (mg/cm² ) 2.5 - 3.0
Effective diameter (inch/mm) 0.78/19.8
Material Mica
Electrical Specifications  
Recommended anode resistor (meg ohm) 3.3
Maximum starting voltage (volts) 350
Recommended operating voltage (volts) 500
Operating voltage range (volts) 450 - 650
Maximum plateau slope (%/100 volts) 10
Minimum dead time (micro sec) 120
Gamma sensitivity Co60 (cps/mr/hr) 45
Tube capacitance (pf) 3
Weight (grams) 60
Maximum background shielded  50mm Pb + 3mm
Al (cpm) 30
Minimum anode resistor (meg ohm) 2.2

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