in current transmitter why we use 4-20ma ???

2 Answers   IMCO, IOCL,

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what is the advantage by using PID controller than P& PID?

1 Answers  

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what is instrumentation?

8 Answers  

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what is the difference between laminor flow and turbulant flow

2 Answers   Invensys,

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In VVVF DRIVES VOLTAGE IS ALSO VARY WITH THE FREQUENCY. HOW? WHAT IS THE DIRECT FORMULA RELATING THESE TWO.

0 Answers   India Cements,

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Basic working principle of control valves

1 Answers  

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when we are using HART COMMUNICATOR why we are using 250 ohm resistance while using HART COMMUNICATOR.

7 Answers  

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How a conductivity sensor & analyzer work at boiler, whats the principle & science is beyond this,How conductivity sensor sence & convert signal & move toward analyzer & analyzer show reading in percent? also what is temperature compensate option in conductivity analyzer

0 Answers  

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What are the types of valves?

0 Answers  

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can any one pl explain me in brief that how we select the leakage classification in valve,means for liquid or gas there is any standard for selecting leakage classification or its depend upon valve size or any any other parameter.

3 Answers  

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What is the loop calibration? Which instrument used to loop calibration and how?

2 Answers   Descon, QCon,

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what is difference between OP AMP and differential amplifier?

5 Answers   TCS,

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