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WHAT IS THE Differance b/w on/off & pid control valve?
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Answer Posted / sabitha reddy
THE BASIC CONTROL VALVE SET UP WIL BE DESIGNED IN ORDER TO
UNDERSTAND THE CONTROL VALVE OPERATION AND IT'S FLOW
CHARACTERSISTICS..INHERENT FLOW CHARACTERISTICS CONSISTS OF
PNEUMATIC CONTROL VALVES OF LINEAR,EQUAL PERCENTAGE,QUICK
OPENING(ON/OFF)..
COMING TO THE DIFFERENCES BETWEEN CONTROLLERS IS--
ON/OFF IS DISCONTINUOUS WHERE AS PID IS CONTINUOUS ONE
(WHICH ATTEMPTS TO CORRECT THE ERROR BETWEEN MEASURED
PROCESS VARIABLE AND DESIRED SET POINT )AND IT'S OUTPUT
CHANGES SMOOTHLY...
| Is This Answer Correct ? | 7 Yes | 2 No |
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