High-intensity pressure transducers

  • 17-Dec-2012 04:00 EST

Meggitt Sensing Systems’ Endevco 8507C rugged, miniature piezoresistive pressure transducers, as well as its range of acoustic microphones, support the requirements of hypersonic, transonic, and "quiet flow" wind tunnel testing; turbulent airflow measurements; and other high-intensity aerodynamic testing. The devices feature low-pressure offerings of 1, 2, 5, and15 psig ranges with a 300-mV full-scale output and up to 20X minimum burst pressure (1 and 2 psig versions). Series transducer output is said to be three times that of industry pressure transducers at comparable ranges. The transducer features an active four-arm strain gauge bridge, diffused into a sculptured silicon diaphragm, for maximum sensitivity and wideband frequency response. In addition, the firm’s Endevco prepolarized condenser measurement microphones, in free-field, pressure, low-cost array, and random incidence types, may be purchased as standalone units or in precalibrated 0.25-in and 0.5-in microphone and low-noise preamplifier combinations with iTEDS onboard memory storage.

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