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ETI Hot Cathode:
Right Angle Metal Bayard-Alpert

  • Based upon proven ETI designs.
  • Right angle design and entry grid minimizes deposition on the sensor assembly, extending filament life, while providing good conductance.
  • Choice of single or dual bonded thoria filament versions.
  • Bakeable to 450°C.
  • Choice of degas methods (by model).
  • Bail mechanism securely retains cable in place.
  • Operating Range:
    • 1x10-3 to 4x10-10 Torr - single filament version
    • 1x10-3 to 2x10-11 Torr - dual filament version
  • Wetted Materials: Type 304 Stainless Steel, tungsten, thoria, ceramic.
  • Collector: 0.005” tungsten
  • Grid:
    • Tungsten helix - single filament version
    • Ta and Pt/Mo squirrel cage - dual filament version
  • Nitrogen Sensitivity:
    • 10/Torr - single filament version
    • 25/Torr - dual filament version
  • X-ray limit:
    • 4x10-10 Torr - single filament version
    • 2x10-11 Torr - dual filament version
  • Electron bombardment degas:
    • 70 watts - single filament version
    • 40 watts - dual filament version
  • Resistance heated degas: 6.3 - 7.5 volts @ 10 amps (single filament version only)
  • Maximum Continuous Bake Temperature: +450°C
  • Vacuum Interface: 2.75” CF Non-Rotatable Flange
  • Collector Potential: 0 volts
  • Shield Potential: n/a
  • Grid Potential: 150 to 180 volts
  • Filament Voltage: 3 to 5 volts
  • Filament Potential to Ground: 30 volts

This high performance BA sensor is housed in a right angle stainless steel body. Enclosing the sensor in a right angle body significantly reduces the amount of deposition that would otherwise coat the sensor assembly. Unlike glass body ion gauges, the wide throat of the 8140EA provides excellent conductance. The sensor can be mounted in any orientation. This high performance sensor is based upon the proven ETI 8130 and 8140 nude gauge designs. It is available in single or dual thoria bonded filament configurations. The filament in the single filament model is spring tensioned.

Product Applications

  • Physical Vapor Deposition
  • High Energy Physics
  • Ion Implant
  • Lamp, Lighting & Laser Products Mfg.
  • MOCVD
  • Mass Spectrometers
  • CRT Mfg.
  • Night Vision / Electro-Optical Detector Mfg.
  • Optical & Functional Films
  • Plasma Enhanced Deposition