Answer / mathan

proportional -it is the present error and it can be adjusted by gain.
integration - past error and can be adjusted by resetting functions
derivatives - future error and can be calculated by rate of change of time

Answer / carl_ellis

PID provides a modulated output response to an error signal,
where error is the difference between what you want, the
setpoint, and what you have, the process variable.

PID uses an output response proportional to the input span
(P = proportional), modified by the accumulated error over
time (I = integral) and modified by the rate-of-change of
the error (D=derivative).

Carl Ellis
Measure First

how can calibrate pressure transmeeter in the feild ?

1 Answers  

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what are the following documents comes under loopchecking

1 Answers   Heisco,

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hello this is dhinakar i am completed my instrumentation engg . recently i got job in sugar industry side. i like to ask one question can any one say what are the things i have to follow know more about industrial instrumentation,,,,,,,

6 Answers  

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What is feed factor and its Importance in cement industry? How we can solve feed factor?.

0 Answers  

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What is the diffrence between ff tx and non ff tx

0 Answers   Jindal, Rosemount,

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0 Answers   DEWA,

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0 Answers  

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4 Answers  

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how does we do bench calibration of a differential transmitter.

1 Answers  

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5 Answers  

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What is loop1 and loop2 in MTS LT?

0 Answers  

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1 Answers  

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