BETA-2
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Geiger-Muller counter of alpha-beta-gamma-radiation
- Main characteristics
- Overall dimensions
- Typical count rate as a function of dose rate
- The scheme of connection
Main characteristics
|
Starting voltage |
V |
250÷310 |
|
|
Operating voltage (recommended) |
V |
400 |
|
|
Operating voltage range |
V |
350÷550 |
|
|
Plateau length |
V |
200 min |
|
|
Plateau slope |
%·V-1 |
0,25 max |
|
|
Efficiency to: |
% |
|
|
|
|
239 Pu |
|
20 min |
|
|
204 Tl |
|
45 min |
|
|
90Sr - 90Y |
|
60 min |
|
Sensitivity to 137Cs |
µR-1 |
160÷240 |
|
|
Own background in the 50 mm Pb shield |
cps |
1 max |
|
|
Surface density of mica |
mg·cm-2 |
2,7÷3,8 |
|
|
Mica window area |
cm2 |
13,8÷15,1 |
|
|
Operating temperature range |
°С |
-50÷+60 |
|
|
Life expectancy |
count |
1×1010 |
|
|
Weight |
g |
27,5 max |
|
Overall dimensions
Typical count rate as a function of dose rate 137Сs
The scheme of connection
