Skip to content

GNP358-7RH Specifications

Geiger-Mueller Tube
Platinum Plated High Sensitivity,
High Temperature γ Radiation Counter Tube

Electrical Characteristics

Recommended Operating Voltage (volts)900
Operating Voltage Range (volts)850 - 1050
Maximum Dead Time (μs)100
Maximum Plateau Slope (%/100 volts)5
Minimum Anode Resistor (MΩ)3.3
Recommended Anode Resistor (MΩ)5.0
Gamma Sensitivity Cs137 (cps/mR/hr)127
Max. Background Shielded 50mmPb+3mmAl (cpm)30
Tube Capacitance (pF)13

Mechanical Characteristics

Nominal Active Length (inch/mm)6.73 / 170.9
Window Thickness (mg/cm2)-
Active Diameter (inch/mm)0.605 / 15.4
Cathode MaterialCr - Fe
Cathode Wall Thickness (inch/mm)0.10 / 0.25
Operating Temperature Range (°C)-55 to 200
Fill GasNe/Ar + Halogen
Type of ConnectorPin
Approx. Weight (grams)58
Maximum Altitude (ft)TBD

Equivalent models:

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

Scroll To Top