Apparatus and method for measuring pressure changes within pressure vessels
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United States of America Patent
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Feb 9, 1993
Grant Date -
N/A
app pub date -
Feb 1, 1991
filing date -
Feb 1, 1991
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Apparatus and methods for detecting pressure changes within the chamber of a pressure vessel are disclosed. The apparatus includes a pressure transducer which is gauge-referenced to atmospheric pressure and has bi-directional capability of determining pressure changes above and below atmospheric pressure. The transducer is structured to provide frequency output and is therefore connected directly to a microprocessor. The microprocessor includes structure programmed to compensate for variations in existing ambient atmospheric pressure.
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