Description
The ultra-compact Geiger-Muller counter SBM-21 is designed for measuring hard beta and gamma radiation during dosimetric monitoring.
GM SBM-21 is equivalent to SBM-20, SBM-20-1, STS-5, SI22G
Technical specifications:
- Range of registering gamma radiation: 0.1 – 1000mkR/sec
- Gamma sensitivity Cs137: 6.5 – 9.5 pulses/sec at P=10mkR
- Working range: 350 – 475V
- Start of counting = 260 – 320V
- Length of counting plateau: at least 100V
- Pulses value: at least 50V
- Plateau slope: 0.15 %/V
- Dead time at 400Vpower: 64 R/mksec
- Maximum counting: no more than 650 pulses/sec
- Background noise: no more than 0.2 pulses/sec
- Body size: 16 x 6mm
- Pin size: 5 x 2mm
- Total length: 21mm
- Weight, no more: 1g
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