Bayard-Alpert hot-cathode ionization gauge tubes employ a heated filament for the source of electrons. The Agilent UHV-24 has a wide range of operating pressure capabilities. It can measure pressures below 2 x 10-10 torr. Because of its small diameter and closed structure, its ionization rate is at least twice that of other ionization gauges. The small collector diameter limits the X-ray current, which also helps extend the lower pressure limit of the gauge.
Description Part Number Fitting Shipping Weight kg (lbs) UHV-24, dual tungsten filaments 9715008 2.75 in. CFF 2.0 (4.0) UHV-24, dual thoria-iridium filaments 9715007 2.75 in. CFF 2.0 (4.0) UHV-24P Extended Range,dual tungsten filaments 9715014 2.75 in. CFF 2.0 (4.0) UHV-24P Extended Range, dual thoria-iridium filaments 9715015 2.75 in. CFF 2.0 (4.0) Filament replacement kit (thoria-iridium) 9710028 0.5 (1.0) Filament replacement kit (tungsten filament) 9710018 0.5 (1.0)
