Design and calibration of an unsteady pressure measurement system

Abstract

A calibration method for fast response pressure transducers has been developed and tested. The results prove that the setup is very effective, and have indicated resonant behaviour in existing pressure transducers due to the presence of a protective screen. In parallel, a simulation program has been developed which runs on a PC, computing the frequency behaviour of unsteady pressure measurement systems. A verification of the simulations against data obtained with the calibration method shows excellent results. The same program has been shown to correctly compute the time response of pressure measurement systems, thus providing the means to optimize response times. Finally, the program has been used for the design of a new setup, which was shown to perform differently than intended, but exactly as necessary.