The design of a sensitivity improved dual diaphragm based vibrating wire transducer for sensing pneumatic pressure is proposed. The improvement achieved in sensitivity of a dual diaphragm structure over the single diaphragm category is verified through experiments. An experimental setup for efficiently assessing the dynamic performances of the pressure transducers is presented. Eventually, the improved sensitivity concedes improvement in precision and resolution of the instrument. While the vibrating wire transducer based pressure sensors always show better dynamic performances over others, the present dual diaphragm structure offers improved sensitivity, which adds to their dynamic performances and overall performance characteristics.
A vibrating wire stretched between two diaphragms increases the sensitivity of pressure measurement.