Inductive probe controller/conductive probe emulator
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United States of America Patent
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Mar 3, 2009
Grant Date -
N/A
app pub date -
Sep 24, 2004
filing date -
Sep 29, 2003
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An Inductive Probe/Conductive Probe Emulator is designed to replace conductive probes at a much lower cost than existing inductive probe systems. The conductivity probe simulator is usable with any industrial controller that uses a standard two wire conductivity probe interface. A continuously variable semiconductor resistive element is employed to match the conductivity of any conductive probe. The system uses the inductive probe reading to adjust the resistive element to the correct value. The conductivity probe simulator can be configured to emulate any conductivity probe with any probe constant by downloading configuration parameters to the probe controller or by setting configuration switches on the controller module. Additionally, the inventive probe simulator is equipped with an embedded temperature sensing element, giving the system a capability to perform a temperature correction in the controller section, if necessary.
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