Accession Number : AD0830249

Title :   PARTIAL PRESSURE ANALYSES OF THE FINAL PRESSURE OF HIGH-VACUUM PUMPS (MEASURED WITH AN OMEGATRON),

Corporate Author : GENERAL DYNAMICS/ASTRONAUTICS SAN DIEGO CA

Personal Author(s) : Leybold, F.

Report Date : 10 DEC 1958

Pagination or Media Count : 15

Abstract : The final pressure of vacuum pumps, measured with ordinary vacuum gages, is a measure of the quality of pumps and indicates the possibilities of their application. However, knowing the total pressure or the sum of the partial pressures of permanent gases which are measurable after freezing with liquid air, is not always sufficient. Also the gases and vapors as well as their vapor pressures should be known. The purpose of this paper is an attempt to fill this need by reviewing the composition of the final pressure of different high-vacuum pumps. (Author)

Descriptors :   (*VACUUM PUMPS, PERFORMANCE(ENGINEERING)), VACUUM, MEASUREMENT, VAPOR PRESSURE, MASS SPECTROSCOPY, SPECTRUM ANALYZERS, OILS, DIFFUSION PUMPS, MERCURY, TEMPERATURE, IONS, ROTARY PUMPS, WEST GERMANY.

Subject Categories : Pumps, Filters, Pipes, Tubing, Fittings & Vlvs

Distribution Statement : APPROVED FOR PUBLIC RELEASE