Interferometric Optical High Pressure Sensor
Abstract
A high pressure sensor has been built and tested based on measuring the compression or an optical etalon and recording the resulting fringe shifts. A birefringent sapphire etalon has been used along with polarized light to make the etalon function as a dual-thickness device; the result is to remove the ambiguity of direction of pressure change that results from a single etalon device. Details of the pressure head design, pressure sealing, and system evaluation are presented. Design goals of better than 5,000 psi accuracy over a range up to 150,000 psi with time resolution better than 0.1 ms are projected to be met from preliminary tests.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1992
- Accession Number
- ADA245100
Entities
People
- Thomas R. Steele