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Victoreen 1B85A GM tube
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This device measures 106x22mm overall (19mm across main body). |
This is a metal wall beta-gamma counter tube designed to replace thin-walled glass tubes.
| Min operating voltage | 850V |
| Max operating voltage | 950V |
| Min beta energy | 160keV |
| Max threshold voltage | 800V |
| Min plateau length | 200V |
| Plateau slope | 3%/100V |
| Recovery time | 100µs |
| Background (at 900V) | 40 counts/minute |
| Life (at 6000 counts per minute) | 108 counts |
(Data relates to 1B85, not 1B85A - information on any difference is needed)
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