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SBM-20
Parameters and characteristics .


SBM-20 spec.
SBM-20, SBM-20U
HARD BETA and GAMMA GM DETECTORS

GENERAL SPECIFICATIONS

Parameters SBM-20 / SBM-20U
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 0C -60 to +70

WALL SPECIFICATIONS

Parameters SBM-20 / SBM-20U
Areal Density (mg/cm2) 40
Thickness (mm) 0.05

ELECTRICAL SPECIFICATIONS

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



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Factory logo   Name (click=photo) Price, USD   Equivalents Description
  SBM-20 26.30 USD