1x SBM-20U Geiger counter, tested 100%

Description

1LOT - 1PCS
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After sending the lot the tracking number will be sent
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SBM20U Geiger-Muller cylindrical counter is designed for registering hard beta and gamma radiation in radio engineering devices.
The SBM-20U Geiger-Muller counter is widely used in the field of radiation monitoring, icing and smoke detectors, as well as in flaw detection.
Technical characteristics of SBM20:
Operating voltage-400 V.
Sensitivity - from 60 imp / MKR to 75 imp/MKR.
Sensitivity spread - no more than ±20%.
The range of recorded power exponential doses of gamma radiation-from 0.004 µr/s to 40 µr/s.
Energy of product registration counter SBM-20:
- gamma quanta - from 0.05 MeV to 3 MeV;
- beta particles-not less than 0.3 MeV.
The length of the counting characteristic plateau is at least 100 V.
The counting start voltage is from 260 V to 320 V.
The slope of the counting characteristic plateau is 0.1 % / V.
Dosimetric characteristics of SBM-20:
- maximum counting speed (Nmach) - 4000 imp / s;
- natural background level (NF) - 60 imp / min.
The counting speed at a power of 4 µr*s-1 from the 137Cs source is from 240 imp*s-1 to 280 imp*s-1.
Operating mode-current and pulse.
The product's cathode material is SBM20 Geiger counter-stainless steel.
The minimum dead time at 400 V is 190 MS.
Pulse amplitude - at least 50 V.
Output capacity-no more than 10.5 pF.
Insulation resistance-100 MOhm.
Overall dimensions:
- diameter-no more than 11 mm;
- length - no more than 108 mm.
Weight - no more than 10 g.