Understand how ionization vacuum gages work and what affects their performance. This nonfiction report surveys the design and behavior of ionization gages used in high and ultra-high vacuum systems, focusing on elements that influence accuracy and reliability.
This edition outlines basic gage designs, reviews performance across major gage types, and explains practical calibration approaches. It highlights external circuits and the many factors that shape readings, including methods of calibration and the role of pressure dividers. The work is grounded in a broad survey of literature and offers guidance for evaluating and comparing different gage designs.
- An overview of common gage types, including Bayard–Alpert and Penning designs, with notes on specialized variants.
- Calibration methods such as volumetric and conductance pressure dividers, plus constant rate of pressure change approaches.
- Factors impacting performance, such as degassing, outgassing, adsorption, background currents, magnetic effects, and envelope behavior.
- How to assess linearity, sensitivity, range, and overall accuracy for vacuum measurement setups.
Ideal for readers involved in vacuum technology, instrumentation, and calibration who need a practical reference on ionization gages and their performance characteristics.