Hot-filament ionization gauge
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The hot-filament ionization gauge, sometimes called a hot-filament gauge or hot-cathode gauge, is the most widely used low-pressure (vacuum) measuring device for the region from 10−3 to 10−10 Torr. It is a triode, with the filament being the cathode.
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Quick Facts Other names, Uses ...
Other names | Hot-cathode gauge Bayard–Alpert gauge |
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Uses | Pressure measurement |
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Note: Principles are mostly the same for hot-cathode ion sources in particle accelerators to create electrons.