A Computer-Controlled, Precision Pressure Standardby Othon K. Rediniotis, AEROPROBE Corp, Blacksburg, United States,
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: Pressure measurement | Wind tunnel | Computing in civil engineering | Control systems | Wind pressure | Calibration | Aerodynamics | Imaging techniques
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