Ultra High Vacuum Ion Gauges

AIG1xG Ion Gauges

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
• Degassing by electron-bombardment
• Maximum bakeout temperature 450°C
• Sensitivty 19 per millibar for nitrogen
• X-ray asymptote 3 x 10^-11 mBar
• DN40 CF mounting flange, NW35CF (2.75″)
• RoHS compliant