A pressure transducer has been developed using a metallic resonating t
uning fork. The fork has ken mounted horizontally across two pillars w
hich are an integral part of the diaphragm of a pressure transducer. T
he displacement of the. diaphragm induces an axial force in the fork.
The applied stress causes the natural frequency of the fork to increas
e, The experimental pressure transducer has a linear characteristic ov
er its 6 bar range with repeatability better than 0.1%, and hysteresis
of 0.1% of the range.