Circuit for providing a common setpoint for manual and automatic regulation of a process control system
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United States of America Patent
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-
May 29, 1984
Grant Date -
N/A
app pub date -
Oct 14, 1981
filing date -
Oct 14, 1981
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A circuit for providing a common setpoint for both automatic and manual operation of a process control system includes a process controller. A parameter of the process can be changed by changing the output of a controller. A variable input voltage to the process controller establishes the setpoint of the parameter. Changes in the variable voltage are made either manually or automatically so that a common setpoint is established for both types of operation.
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