Tube-number record
6578
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BrandVacuum Tube Products
ClassIonization Gauge Tube
BaseSpecial / none
Construction
Primary TypeOther / special
EnvelopeCeramic
Base MaterialCeramic RETMA A7.14
SectionsTriode-like (Grid/Collector)
Filament / Heater
MaterialPure Metal
Absolute Maximum Ratings
Plate Voltage500 V
Grid 1 Voltage-500 V
Cathode Current15 mA
Audio Performance
Key Features
- Three separately connected filaments
- Provision for outgassing the grid by direct heating
- Reliable measurement of low pressures
- Collector is physically small to minimize bombardment release errors
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Ionization Gauge Operation | 150 V | — | — | — | 5 mA |
Application Notes
Used for measuring vacuum in large metal systems. Filaments should be used individually for maximum life. Grid outgassing may be done while the tube is in operation.
Datasheets
Datasheet: 6578.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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