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Geiger-Müller Tube SBM-20
[46603]
CHF 39.39

Stock: 7

SBM-20 Geiger-Müller Tube for detecting beta and gamma radiation.

General Specifications:

Gas Filling Ne + Br2 + Ar
Cathode Material Stainless Steel, 50 mkm
Maximum Length (mm) 108 / 101
Effective Length (mm) 91.0 / 83.5
Maximum Diameter (mm) 11
Effective Diameter (mm) 10
Connector Pin
Operating Temperature Range -60 to +70°

Electrical Specifications:

Minimum Anode Resistor (meg ohm) 1.0
Recommended Anode Resistor (meg ohm)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*10^10
Weight (grams)10 / 9

All tubes are new/unused and tested.

This product was added to our catalog on Friday 20 May, 2011.
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