Give brief detail on PID Control.

SURAJTHEGREAT

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• Mar 3rd, 2009

A controller is a device employed to obtain a stable output. There are many controllers of that PID controller is the most widely used.  A proportional–integral–derivative controller (PID...

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Why are using 4ma to 20ma for signal transfer. Why not 0 to 20ma?

fredrick

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• Apr 7th, 2009

You can detect when their is an open circuit.

sandeepvmenon

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• Mar 26th, 2009

Because we cannot detect open loop if 0-20 is used.

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