NEWPORT 优铂特 274008 274 Glass Tubulated Bayard-Alpert Type Ionization Vacuum Sensors
Vacuum Gauge, Glass Bayard-Alpert, Single Thoria-coated Iridium Filament, 2.75 in. CF, 1.0 in. Port
The 274008 Glass Bayard-Alpert Hot Cathode Gauge features a single thoria-coated iridium filament, a <1 x 10-9 to 1 x 10-3 Torr vacuum measurement range, and a 2.75 inch non-rotatable CF flange with 1 inch inlet port. 274 Ionization Vacuum Gauges provide good vacuum and pressure measurement at an economical cost. Bayard-Alpert (hot cathode) gauges provide pressure measurement based on the ionization of gas molecules by a constant flow of electrons from a filament. The number of ions created is directly proportional to the density of molecules. The ions are collected and measured by a vacuum gauge controller and converted to pressure based on the sensitivity of the gauge.
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