Generation of Precise Reference Pressures Up to 15,750 Psi

[+] Author and Article Information
J. O. Ess

Hudson Laboratories of Columbia University, Dobbs Ferry, N. Y.

J. Basic Eng 87(4), 1063-1071 (Dec 01, 1965) (9 pages) doi:10.1115/1.3650808 History: Received August 12, 1964; Online November 03, 2011


This paper covers the design and the operational and performance characteristics of a precision pressure generation system utilizing a controlled-clearance type of piston gage. Programmed computer outputs for generating precise pressures automatically in increments smaller than 1 psi over the entire system range have been used to eliminate computational requirements and to generate a large number of pressures rapidly. Piston fall rates have been controlled using constantly varying jacket pressures to maintain sensitivity and flotation requirements, and to keep wear down to a minimum. Experience regarding constancy of pressure output over a period of three years is covered. The amount of actual time in use for the system is well over a thousand hr.

Copyright © 1965 by ASME
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