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Dielectric-insensitive capacitive differential pressure gauge for use at low temperature.

Author(s) : TALBOT T., BRISSON J. G.

Type of article: Article

Summary

A capacitive differential pressure gauge for use at temperatures below 4 K is described. Fluid is admitted to two sample chambers with flexible walls to which a sensing capacitor is mechanically connected. Differential pressures between the chambers flex these walls and change the capacitance of the gauge. Because the capacitor is located outside these chambers, the gauge is insensitive to the dielectric variations of the fluid. Typical differential pressures of 100,000 Pa were measured with a common mode rejection ratio in excess of 50.

Details

  • Original title: Dielectric-insensitive capacitive differential pressure gauge for use at low temperature.
  • Record ID : 2000-2346
  • Languages: English
  • Source: Rev. sci. Instrum. - vol. 70 - n. 4
  • Publication date: 1999/04
  • Document available for consultation in the library of the IIR headquarters only.

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