CV2247 GM tube
 |
This tube measures 125x32mm overall |
This GM tube was used in the British Contamination Meter, No. 1.
| Threshold voltage (at 20°C) | 315 to 375V |
| Operating voltage (at 20°C) | 355 to 415V |
| Plateau slope (per volt) | 0.07% av, 0.15% max |
| Plateau length | 150V av, 90V min |
| Operating temperature range | -55 to +50°C |
| Useful life | >109 counts |
