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

3 Answers   Hofincons,

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how can I install "operating system " in may HART communicator? It is damaged, and it doesn't boot up.

1 Answers   ARPC,

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why use 50% lel methane gas concentration for gas detector calibration instead of 60% lel gas concentration whereas the hi alarm set at 60% lel.

0 Answers   ONGC,

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What is the definition of direct acting valve & reverse acting valve

2 Answers  

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Sir, I am working as a Instrument Engineer in Grasim Industries. Can any body provide question answer for interview purpose

0 Answers   Grasim,

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What is the difference between conductive lined pipe and conductive unlined pipe? Why do we see that?

0 Answers   Process Control Technologies,

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What is the Temperature Co-officient of Resistance of PT- 1000 and PT-2000 ?

2 Answers   Adani, Birla, MEIL,

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centrifugal compressor interlock? Tell me the parameter at which compressor will trip

0 Answers   Cairn,

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What is solenoid valve? Where it is used?

0 Answers  

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what is the process to make control schematic ?

0 Answers  

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how to check control valve was passing?how to check online?

3 Answers  

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what is the difference between auto tuning and manual tuning of controllers(eg:PID,PI,PD CONTROLLERS )

2 Answers   GATE,

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