EXPLAIN PROPOTIONAL INTEGRAL DERIVATIVE CONTROL ACTION?

1 Answers  

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What is pipe schedule? What are all effects its having in the valve? how do we take care of pipe sch in case if the customer dint specify in the data sheet. What we need assume and in what basis?

3 Answers  

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what is different betwen Process zero and atm zero?

1 Answers  

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Why we use 4 - 20 ma?

6 Answers   IJT, ONGC,

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who to convert dc to ac

7 Answers   ONGC,

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why we use impulse line of flow transmitter at 45 deg. angle both side of orifice plate.

0 Answers  

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Im working in a shopping center, it is also hotel and office building, two towers exactly and someone is proposing a PLC control for the HVAC system, but Im thinking of a DDC control system. in this case what is the difference between PLC and DDC control?

1 Answers  

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What does a fire detector detects?

4 Answers   GAIL,

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i have height of stem drum level 1000mm.how i calculate the DP transmitter

2 Answers  

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How will you change the action of a control valve?

1 Answers   CCIE,

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how to work static pressure sensore how to work dpt

0 Answers  

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is there any digitel grevity meter availaible in the market by which we can measure specific gravity of a battery?

0 Answers  

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