In high-vacuum systems used for semiconductor processing, mass spectrometry, vacuum heat treatment, and medical-device sterilization, a bake-out cycle is the final step to reach true ultra-high vacuum. By heating the chamber walls, flanges, and internal components to 150–250 °C (or higher) for 12–48 hours under active pumping, adsorbed water vapor, hydrocarbons, and other contaminants are

In vacuum-dependent industries—semiconductor fabrication, mass spectrometry, vacuum heat treatment, and medical-device sterilization—systems often run 24/7 for months or years without interruption. A gauge that drifts, fails to start, or suddenly reports an erroneous reading can halt production, compromise yield, or trigger costly scrap. Evaluating vacuum gauge performance under continuous duty therefore goes far beyond datasheet