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GN1420-500 Specifications

Mica Window Halogen-Quenched
α,β,γ Geiger-Mueller Tube

Electrical Characteristics

Recommended Operating Voltage (volts)500
Operating Voltage Range (volts)475 - 675
Maximum Dead Time (μs)100
Maximum Plateau Slope (%/100 volts)10
Minimum Anode Resistor (MΩ)3.3
Recommended Anode Resistor (MΩ)3.3
Gamma Sensitivity Cs137 (cps/mR/hr)60
Max. Background Shielded 50mmPb+3mmAl (cpm)30
Tube Capacitance (pF)3

Mechanical Characteristics

Nominal Active Length (inch/mm)0.42 / 10.7
Window Thickness (mg/cm2)1.4 - 2.2 , Mica
Active Diameter (inch/mm)1.75 / 44.5
Cathode MaterialCr - Fe
Cathode Wall Thickness (inch/mm)0.180 / 4.57
Operating Temperature Range (°C)-55 - 75
Fill GasNe/Ar + Halogen
Type of ConnectorGrid Cap
Approx. Weight (grams)116
Maximum Altitude (ft)5000

Equivalent models: ZP1420-500

Global Nucleonics has the design and engineering capability to produce detectors to your specifications.

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