Highlights



































Description

SBM-20 Geiger Counter Tube Beta Gamma , tested

LOT OF 1Pc.
Technical characteristics:

Minimum Anode Resistor 1.0 (MOhm)
Recommended Anode Resistor 5.1(MOhm)
Recommended Operating Voltage 400V
Operating Voltage Range 350 ? 475V
Initial voltage 260 ? 320V
Plateau length at least 100 V
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) 9


Gas Filling Ne + Br2 + Ar
Cathode Material Stainless Steel, 50 mkm
Maximum Length 101 mm
Effective Length 83.5 mm
Maximum Diameter 11 mm
Effective Diameter 10 mm
Connector Pin
Operating Temperature Range from -60 to +70 C
Areal Density 40(mg/cm2)
Thickness 0.05 (mm)

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