Accession Number:

AD0488191

Title:

GAS TEMPERATURE CORRECTIONS IN ENCLOSED IONIZATION GAUGES.

Descriptive Note:

Rept. for Sep 65-Apr 66,

Corporate Author:

AEROSPACE CORP EL SEGUNDO CA LAB OPERATIONS

Personal Author(s):

Report Date:

1966-06-01

Pagination or Media Count:

11.0

Abstract:

The errors in the measurement of low pressures in vacuum systems with ionization gauges is significant over large temperature ranges. It is shown that the errors can be large even if sorption, desorption, condensation, and evaporation are neglected. The gauge concentration sensitivity based upon molecular concentration or number density in the gauge is the only true constant. Sensitivities based upon pressure are temperature dependent. Relationships for temperature corrections to enclosed ionization gauges are derived and examples are tabulated. Author

Subject Categories:

  • Test Facilities, Equipment and Methods
  • Electricity and Magnetism

Distribution Statement:

APPROVED FOR PUBLIC RELEASE