Can anybody explain about wellhead control system.

1 Answers  

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1.In which princeple DP transmeter works? 2.Why UPS system is use for DCS? 3.How drum lvel controller works? 4.What is the difference between glob valve and gate valve? 5.How axial shift probe work & in which princeple it works?

1 Answers   Luberef, Qatar Gas, Reliance,

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y v r connecting 250 ohms resistor in series when u cummunicate with BT in bench calibration?

5 Answers  

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is manifold required for an integral orifice meter?

2 Answers  

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What is difference between converter & transducers?

4 Answers  

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how to calibrate a control valve?

7 Answers   Reliance, Telecon Systems,

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What is the meaning of Feedback? How many types it is? Explain it?

2 Answers   Bharathi Cement,

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how to measure draft pressure in transmitter pl. give its single line digram

0 Answers  

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i want to control the temp of sand(welding flux) between the range of 150deg C to 170deg C. sugges me sum temp control method without PID controller.

1 Answers  

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Where is the flow transmitter installed with respect to control valve, state reason.

1 Answers   ADMA OPCO,

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1,why we use 4-20 ma output of all instrument qhy not use 0- 20, 2,what is the different between PLC & DCS. 3,how can we meaure maximum span of new flowmeter if not given any information.

4 Answers   Reliance,

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what is control valve and how is work

5 Answers   Descon,

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