I am applied 100 % pressure on to the air to open control valve,but the valve is not fully closed..and 10-15% is open the valve. how to calibrate the control valve?

3 Answers   OPaL,

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If boiler drum level transmitter is not working properly what you will do for resolving the problem in plant running condition?

2 Answers  

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flow transmitter range is 0 -500 mmwcc but the transmitter shows 12 ma for o mmwc instead of 4 ma ...how to solve this problem when we apply 375 mmwc it shows 16 ma

3 Answers  

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why used three wire in RTD.

8 Answers   BARC,

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why 4-20 mA in covection system?

3 Answers  

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suppose there is gas flow meter I want to know weather meter calibration is done at high pressure or low pressure? pls justify.

2 Answers   Siemens,

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Explain " FAIL SAFE " feature in temp. measurement.

1 Answers   Bapco Bahrain Petroleum Company,

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Explain PID, ON/OFF, Controls

0 Answers   CCIE, Gulf Engineering,

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I want to know about DDCMIS in detail ? please explain it. Also give name of reference books in which it is explained in detail in very simple manner.

0 Answers  

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What's the Installtion procedure of DP Transmitter for Gas,steam and water?

2 Answers  

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sir, i preparing hpcl,ongc,barc,hal exams(instrumentation engg)pls send a placement papers

2 Answers   BARC,

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how to convert cubic metre per hour to newton cubic metre per hour

0 Answers  

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