SBM21 tubes
Posted: 18 Feb 2020, 01:22
Hello,
I offer miniature Geiger-Muller counter SBM-21 (russian name - СБМ-21).
New old stock. Factory packaging: sealed box. 200pcs in pack.
Negotiated price (request in pm or via e-mail).
Details of payment in the signature.
Specifications SBM-21:
Gamma sensitivity Cs137 at P=10 mkR: 6.5...9.5 pulses/sec
Working range: 350...475 V
Start of counting: 260 to 320 V
Slope of the current-voltage characteristic, % / V, not more than: 0,15
Plateau length: at least 100 V
Amplitude of the voltage pulse: at least 50V
Maximum counting: no more than 650 pulses/sec
Background noise: no more than 0.2 pulses/sec
Total length: 21 mm
Size: 6 x 16 mm
Weight: 0.8 grams
Since the packaging is sealed, the geiger counters have not been tested.
The appearance and standard factory packaging of the geiger counters will be attached a little later.
If anyone is interested, write to me: si8b@tutanota.com
I offer miniature Geiger-Muller counter SBM-21 (russian name - СБМ-21).
New old stock. Factory packaging: sealed box. 200pcs in pack.
Negotiated price (request in pm or via e-mail).
Details of payment in the signature.
Specifications SBM-21:
Gamma sensitivity Cs137 at P=10 mkR: 6.5...9.5 pulses/sec
Working range: 350...475 V
Start of counting: 260 to 320 V
Slope of the current-voltage characteristic, % / V, not more than: 0,15
Plateau length: at least 100 V
Amplitude of the voltage pulse: at least 50V
Maximum counting: no more than 650 pulses/sec
Background noise: no more than 0.2 pulses/sec
Total length: 21 mm
Size: 6 x 16 mm
Weight: 0.8 grams
Since the packaging is sealed, the geiger counters have not been tested.
The appearance and standard factory packaging of the geiger counters will be attached a little later.
If anyone is interested, write to me: si8b@tutanota.com