Technical Deep Dive

Introduction The cold cathode ionization gauge is a cornerstone of high-vacuum measurement, offering reliable pressure readings from 10−7 to 10−3 Torr without the filament-related limitations of hot-cathode designs. At Poseidon Scientific, we developed the VG-SM225 Cold Cathode Vacuum Gauge around the proven inverted-magnetron geometry to deliver stable, low-maintenance performance for semiconductor research, PVD systems, vacuum […]

Introduction Vacuum measurement ranges are the foundation of reliable process control in semiconductor manufacturing, physical vapor deposition (PVD), vacuum furnaces, and countless other industrial systems. Understanding where “rough,” “medium,” and “high” vacuum begin and end—and which gauge technology excels in each regime—helps engineers specify the right sensor the first time, avoid costly crossover errors, and