Method of and apparatus for automated sensor diagnosis through quantitative measurement of one of sensor-to-earth conductance or loop resistance
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United States of America Patent
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Mar 12, 1996
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N/A
app pub date -
May 27, 1992
filing date -
May 27, 1992
priority date (Note) -
Expired
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Abstract
A method of and apparatus for automated sensor validation diagnosis during and before operation of pluralities of sensors connected by multiplex sequence in a loop with analog-to-digital converter voltage measurement apparatus responsive to the sensor signals for the primary task of validating a process under monitor by the sensors, wherein provision is made for periodically or selectively quantitatively measuring either (or both) sensor-to-earth conductance or loop resistance of the sensors to insure sensor viability.
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