Reports in Meteorology and Oceanography Number 4. The Fused Quartz Deep-Sea Pressure Gauge.
HARVARD UNIV CAMBRIDGE MASS DIV OF ENGINEERING AND APPLIED PHYSICS
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The report describes progress 1971 on the construction of a prototype deep-sea pressure guage. All of the necessary low power circuitry was designed, constructed, and tested by the Electronics Design Center at Harvard. A digital data acquisition system which processes and places data on 7-track IBM computer-compatible magnetic tape has been designed and constructed. All of the mechanical components, except for a deep-sea mooring, are also ready. At the present time the guage has undergone both high pressure and low temperature tests every element has functioned properly in pressures up to 6120 m H2 the highest pressure used and temperatures down to 0.5C. The temperature and pressure dependences of the various outputs have been determined and a week-long stability test has shown the net drift to be less than 0.2 mmweek.
- Physical and Dynamic Oceanography