Vacuum Gauge

Understanding Ionization Gauge Discharge Characteristics at Ultra-Low Pressure In high-vacuum applications such as scanning electron microscopes, electron-beam lithography systems, and precision analytical instruments, reliable pressure measurement below 10−5 mbar (approximately 7.5 × 10−6 Torr) is essential for maintaining mean free paths long enough to prevent ion scattering and ensure beam stability. Cold-cathode ionization gauges, exemplified

How to Prevent Cold Cathode Gauge Arcing in Contaminated Vacuum Systems Contaminated vacuum environments—common in vacuum heat-treatment furnaces, older diffusion-pumped systems, or processes with residual hydrocarbons—pose a hidden risk to cold-cathode ionization gauges. Uncontrolled arcing can damage electrodes, trigger protective shutdowns, or produce erratic pressure readings that compromise process control. The VG-SM225 Cold Cathode Vacuum

In vacuum-dependent manufacturing and research, engineers often debate whether a gauge’s absolute accuracy or its repeatability deserves priority. For many production processes—continuous coating, heat treatment, or semiconductor wafer processing—repeatability consistently proves more valuable. A gauge that delivers the same reading today, tomorrow, and next week under identical chamber conditions enables tighter statistical process control, fewer