CV2287 GM tube
 |
This tube measures 190x28mm overall (22mm across the glass) |
| Operating volts, Vw=Vt+40V | 380V |
| Plateau length (average) | 120V |
| Plateau slope | 0.05%/V |
| Shielded background counts | 35/min |
| Useful life | >10^9 counts |
| Temperature coefficient | 0.2V/C |
| Count rate for 1.0 milli-roentgen/hour Radium source | 5600/min |
