VacuTec Meßtechnik GmbH Geiger-Mueller Tube 计数管 70 018E(018 00 01)
Physical data
Sensitivity (662keV, 137Cs) 18 counts/s / mSv/h
Dose rate range (137Cs) (0.1 ... 2·104) mSv/h
Photon energy range (0.05 ... 2) MeV
Background (shielded by 5 cm Pb with a 2 mm Al surface) < 2 count/min
Length of the sensitive gas volume 5 mm
Cathode diameter 3 mm
Anode diameter 1.0 mm
Mass 47 g
Filling gas Helium/Halogen
Life expectancy > 6.1010 counts
Electrical data
Starting voltage < 410 V
Plateau voltage range (520 ... 620) V
Plateau length > 100 V
Plateau slope < 0.3 %/V
Recommended supply voltage 550 V
Recommended anode resistor R2 1.6 M
Dead time (R2 = 6.8 MΩ) ≤ 22 μs
Anode to cathode capacitance < 2.5 pF
Insulation resistance > 106 MΩ
Limiting values
Storage temperature range (-55 ... +70) °C
Operating temperature range (-50 ... +70) °C
Minimum anode resistor R2 1.6 MΩ
Maximum supply voltage 600 V
Maximum stray capacitance 2 pF
VacuTec Meßtechnik GmbH Geiger-Mueller Tube 计数管 70 018E(018 00 01)
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