Transient Pressure Measurements by Recess-Mounted Transducers

Recess-mounted diaphragm-type pressure transducers are often used in measuring transient pressures. When the rise time of the source pressure is very fast, ringing of the transducer may occur. This study investigates the ringing of such a transducer numerically and experimentally for the purpose of developing a general method to recover transient source pressures. The approach is based on modeling the transient hydraulics of the measurement system. Favorable comparisons between the recovered pressure traces with those measured by a flush-mounted transducer were obtained. The proposed method makes recess-mounted transducers viable for measuring rapidly changing pressures in both liquid and gaseous media.