Liquid level detection system for high temperature or pressure environments
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United States of America Patent
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Dec 16, 1986
Grant Date -
N/A
app pub date -
Jan 3, 1984
filing date -
Jan 3, 1984
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An electromagnetically actuatable probe is inserted in a vessel containing a body of liquid and in which high pressure, high temperature, corrosive, or other hostile conditions exist. Pulses are transmitted to the probe within a predetermined range of frequencies which include the normal resonant frequency of the probe. Return signals are generated by the probe between the times the transmitted pulses are sent. These return pulses are processed to produce signals which are a function of the level of the liquid that are then employed to control the discharge of the liquid or used by another utilization circuit.
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