Precision Transducer for High Pressure Infrared Measurements
- 1 March 1969
- journal article
- Published by SAGE Publications in Applied Spectroscopy
- Vol. 23 (2) , 157-159
- https://doi.org/10.1366/000370269774381030
Abstract
An externally mounted high pressure semiconductor strain gauge transducer of high precision is described which was used in connection with liquid ir absorption and PVT measurements up to 10 000 atm pressure. The transducer is nonlinear, but can be calibrated by a three point procedure, one point of which is the freezing point of mercury at 0°C, and fit to a derived mathematical function. The precision of the device is approximately 0.8 atm, with a repeatability of 5.5 parts in 10 000, at a level of 10 000 atm.Keywords
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