A Computer-Controlled, Precision Pressure Standard

by Othon K. Rediniotis, AEROPROBE Corp, Blacksburg, United States,



Document Type: Proceeding Paper

Part of: Fundamentals and Advancements in Hydraulic Measurements and Experimentation

Abstract:

The operating principles as well as the technical aspects of the implementation of a precision pressure standard are presented here. The instrument can have dual use: either as a pressure source or as a pressure transducer. The device is mostly intended for use in problems where small differential pressures are of interest, i.e. 0-20 Torr and high accuracy is desirable. Such a range, for example, encompasses most of the pressure measurement applications in subsonic wind-tunnel testing. The device interfaces to a PC and is ideal for fully-automated pressure-transducer-calibration applications. The accuracy of the pressures produced or measured by the device is 0.08% F.S., or better.

Subject Headings: Wind tunnel | Pressure measurement | Control systems | Computing in civil engineering | Calibration | Wind pressure | Standards and codes

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