A hot-filament ionization gauge (HFIG) is a type of vacuum gauge used to measure low pressures, typically in the range of 10^-3 to 10^-9 torr (or mbar). It operates based on the principle of ionization created by a hot filament, which serves as the electron source.

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  1. Vacuum gauges
  2. Vacuum
  3. Physical phenomena
  4. Concepts in physics
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