Amperage/voltage loop calibrator with loop diagnostics
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United States of America Patent
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Jan 26, 2016
Grant Date -
Jun 12, 2008
app pub date -
Jul 23, 2007
filing date -
Oct 17, 2003
priority date (Note) -
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Abstract
A testing device determines values of various electrical variables associated with a device within a process system. The testing device provides bi-directional electrical communication with a device to be monitored and automatically provides a connection configuration between a processing unit and a set of input/output ports. The processing unit outputs a test signal and a configuration control signal to the input/output port control circuitry. The input/output port control circuitry provides a connection configuration to direct the test signal to the device to be monitored and directs a return signal from the monitored device to the processing unit. The processing unit measures an electrical characteristic of the return signal and determines at least two electrical variables associated with the monitored device based upon the measured electrical characteristic of the return signal.
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