Acoustic pressure sensor
1 - 15 psig, 300 mV FS, 3X range Meggitt Sensing Systems - Measurement Group

The Endevco® model 8507C, a rugged, miniature high-intensity acoustic microphone and piezoresistive pressure transducer. Its high sensitivity, combined with high resonance frequency, makes it ideal for use in demanding flight and aerodynamic testing applications such as supersonic jet airflow fields; hypersonic, transonic and "quiet flow" wind tunnel testing; and turbulent airflow measurements.

Available in four measurement ranges from 1 to 15 psig with a full-scale output of 300 mV and up to minimum 20X burst pressure (1 and 2 psig), the Endevco® model 8507C features an active four-arm strain gauge bridge diffused into a sculptured silicon diaphragm for maximum sensitivity and wideband frequency response. Self-contained hybrid temperature compensation provides stable performance over a wide operating temperature range of -18 to 93°C, with excellent measurement stability during thermal transients. The sensors also feature excellent linear performance to 3X range and high shock resistance. The 2.34mm cylindrical housing of the Endevco® model 8507C is designed for space constrained installations, or for those which do not require threaded mounting. Its small size even permits flush mounting on curved surfaces.