The XHV M-BAG is a high precision Modulated Bayard-Alpert Gauge covering the vacuum range of 1 x 10-4 to 2 x 10-12 Torr.

Description

Modulated Bayard-Alpert Gauge

The XHV M-BAG is a high precision Modulated Bayard-Alpert Gauge covering the vacuum range of 1 x 10-4 to 2 x 10-12 Torr.

Equipped with a dual hairpin Tungsten filaments, a close cylindrical Grid and a fine Collector situated at the center of the Grid.

The Modulators are used to reduce the X-ray limit approaching the limit of XHV (eXtreme High Vacuum) in the range of 10-12 Torr.

Features
  • Modulated Bayard-Alpert Type
  • Wide range of measurement
  • UHV Compatible
  • Dual Filament
  • High Temperature
  • Compatible with Volotek VGC1000 Controllers
Vacuum Specifications

Vacuum Range

  • 1 x 10-4 to 2 x 10-12 Torr


Maximum Operating Pressure

  • 1 x 10-4 Torr


Sensitivity

  • Nitrogen 41 /Torr; Hydrogen 10-10 Torr


X-ray Limit

  • 4 x 10-12 Torr
Mechanical Specifications

Filament

  • Dual Hairpin,: Tungsten


Grid

  • Closed Cylindrical Æ 35, Platinum


Collector

  • Central, Tungsten


Modulator

  • 2 electrodes, Æ 0.7 Mounted at 30° /filament


Flange

  • Stainless Steel, CF 63

Filament Polarization

  • + 30 V


Grid Polarization

  • + 180 V


Collector Polarization

  • 0 V


Filament Voltage

  • 4 to 5.5 V


Filament Current

  • 3 to 5 A


Transmission Current

  • Measurement: 1 to 10 mA, Degassing: 1 to 100 mA


Degas by Electron Bombardment

  • 50 to 70 Watts


Beakout Temperature

  • 400° C
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