Low Pressure Measurement Techniques

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Report Number: AFFDL TR 66-11
Author(s): Painter, Herbert A.
Corporate Author(s): Electro-Optical Systems, Inc.
Laboratory: Air Force Flight Dynamics Laboratory
Date of Publication: 1966-07
Pages: 117
Contract: AF 33(615)-1838
DoD Project: 1469
DoD Task: 146907
Identifier: AD0802195

This project was initiated to develop four prototype pressure transducers in the range of 0.0 to 0.1 psia for Wright-Patterson AFB. The design selected makes use of a convoluted diaphragm force collector to drive a cantilever beam. A semiconductor strain gage bridge bonded to the beam converts the force to an electrical signal which is amplified to provide a 0 to 5V dc output. The results presented demonstrate achievement of essentially all requirements, save high-temperature transient performance. It is apparent from the results of this project that an accurate 0.0 to 0.1 psia transducer of low weight and reasonably high natural frequency can be produced. Achievement of higher operating temperature and natural frequency is possible.

Provenance: Lockheed Martin Missiles & Fire Control

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