What is the function of positioner in control valves? does the control valve operate without positioner?

3 Answers   Hofincons,

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Why Instrumentation Air Compressor called as Instrumentation Air compressor?pls dont just tell its trasferring IA to all transmitter,valves.I need exact reason, please......................

2 Answers  

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Can you explain drawbacks between P,I,D & PID controller

1 Answers   JSW, Priya Cement, TPL,

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what is the meaning of potential free contact. difference between dry and wet contact?

6 Answers   GAIL,

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what do we mean by hook up drawing. what r the information we get from it?

7 Answers   Reliance,

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Can I put my meter across an RTD to check it safely witout tripping the equipment when it is connected to an monitoring device eg.RTD module or IQ 1000

1 Answers  

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How to measure the dust in chimney(spm)?

0 Answers   Thermax,

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What is the cv of a control valve?

2 Answers   CCIE,

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what is working principle of vibration prob

3 Answers  

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What is sensitivity of K type thermocouple? Is polarity important in thermocouple connections?

3 Answers   Honeywell,

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How can I make calculation for Install level transmitter (DP) for open tank and cloes tank?

1 Answers   Petrofac,

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how the 4 to 20 mA signal goes to any controller/indicator,and what is the role of voltage ,12/24 and how to do connection of it, in controller.

1 Answers  

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