Parameters |
SBM-20 / SBM-20U |
Minimum Anode Resistor (meg ohm) |
1.0 |
Recommended Anode Resistor (meg ohm) circuit diagram |
5.1 |
Recommended Operating Voltage (volts) |
400 |
Operating Voltage Range (volts) |
350 - 475 |
Initial voltage (volts) |
260 - 320 |
Plateau length (volts) |
at least 100 |
Maximum Plateau Slope (%/100 volts) |
10 |
Minimum Dead Time (at U=400V, micro sec) |
190 |
Working range (mkR/s) |
0.004 - 40 |
Working range (mR/h) |
0.014 - 144 |
Gamma Sensitivity Ra226 (cps/mR/hr) |
29 |
Gamma Sensitivity Co60 (cps/mR/hr) |
22 |
Inherent counter background (cps) |
1 |
Tube Capacitance (pf) |
4.2 |
Life (pulses) |
at least 2*1010 |
Weight (grams) |
10 / 9 |