Tube-number record
5966
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BrandWestinghouse
ClassIonization Vacuum Gauge Triode
Construction
Primary TypeTriode
EnvelopeNonex Code 7720
Sections1 (Dual filament construction)
Filament / Heater
MaterialPure Tungsten
Absolute Maximum Ratings
Plate Voltage-100 V
Plate Dissipation100 W
Grid 1 Voltage600 V
Audio Performance
Key Features
- Special triode designed for ionization vacuum gauge service
- Two Filaments are supplied, one of which is a spare
- Measures pressures as low as 10-7 mm Hg
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Ionization Gauge Service | -30 V | — | — | — | — |
Application Notes
To outgas the ionization gauge, the two filaments may be connected either in series or parallel. Connect ion collector to grid and attach to +500 volts dc. Adjust emission current by raising filament voltage to give the desired operating condition to outgas the elements.
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