Lot - 1pc. or more...
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  • The production date and prints on the tube will be different from what is shown in the photo.
  • Tested on a dosimeter.

SBM-20-1 Geiger Muller Tube Counter Detector

TESTED 

Equivalent to: SBM-20, STS-5, SI22G, M4011t

SBM-20-1 is the most popular counter among household dosimeters;
it is a modernized version of the Geiger-Muller counter SBM-20.

Description
The SBM-20-1 Geiger-Muller counter is designed to detect hard beta and gamma radiation in radio engineering devices

Geiger-Muller counter SBM20-1 ionizing radiation sensors are intended for use in household radiation monitoring devices. They have low supply voltage, high speed and excellent output signal parameters. The case is made of stainless steel with a thickness of 50 microns. Geiger counters respond to hard beta and gamma radiation.

SBM-20-1 is equivalent to SBM-20, STS-5, SI22G
  • Recommended operating voltage: 400V
  • Operating voltage range: 350V – 475V
  • Counting voltage: 260V – 320V
  • Pulse sensitivity to gamma radiation normalized by Cs-137 source: 60 ÷ 75 pulse/μR
  • Dose rate range of recorded gamma radiation: 4∙102 – 40 µR∙s-1
  • Maximum permissible current: 20µA
  • Tube inductance: 4.2pF
  • Work resource: 2 x 1010imp
  • Recommended anode resistor: 5.1Mohm
  • Operating temperature range : – 60°C to + 70°C
  • Own counter background, no more: 1imp/s
  • Dead time at U = 400V : 190µs
  • Filling: Ne – Br2 – Ar
  • Overall dimensions, height x width x thickness, no more: 107 x 11 x 11 mm
  • Weight, no more: 10g
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