AML AIG nude ionization gauges are high-sensitivity UHV Bayard-Alpert ion gauges that cover the ultra high vacuum range 1 x 10-3 to 3 x 10-11 mBar. They are intended for electron-bombardment degas. They have an NW35CF flange with individual glass compression seals, closed-end grids and a choice of filament materials.
Overview
Wide UHV measuring range of 1 x 10-3 to 3 x 10-11 mBar
Replaceable twin tungsten, thoria or yttria-coated filaments available
Individual glass compression seals around each feedthrough pin are more economical and robust than ceramic, resulting in a less expensive and more rugged gaugehead
Central collector pin is inherently guarded against leakage currents by the grounded bulk of the flange
The molybdenum grid has a closed-end, light, rigid structure, resulting in high sensitivity
The x-ray induced electron desorption current at the collector is minimised by geometry and screening
Connector pins are gold-plated, shrouded and polarized
Gold plating ensures that oxidation on the air-side cannot occur even after repeated bakeouts
