Skip to content

GNP358-9RH Specifications

Geiger-Mueller Tube
Platinum Plated High Sensitivity
High Temperature 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
Gamma Sensitivity Cs137 (cps/mR/hr)167
Max. Background Shielded 50mmPb+3mmAl (cpm)30
Tube Capacitance (pF)10

Mechanical Characteristics

Nominal Active Length (inch/mm)8.95 / 227.3
Window Thickness (mg/cm2)-
Active Diameter (inch/mm).61 / 15.5
Cathode MaterialCr - Fe
Cathode Wall Thickness (inch/mm)0.10 / 0.25
Operating Temperature Range (°C)-40 to 175
Fill GasNe/Ar + Halogen
Type of ConnectorPin
Approx. Weight (grams)123
Maximum Altitude (ft)TBD

Equivalent models: NP358-7RH

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

Scroll To Top