Answer / jspatel

One should confirm whether it is isolated and drained

Answer / ahmedallam

verify the instrument with technical data sheet and spec

Answer / fazil

one should have work permit..operator will control the signal manually.. close primary valve and manifold also
drain existing liquid or gas by drain plug.

remove termination and glanding also tape it to avoid short.then you can remove instruments

what are the following documents comes under loopchecking

1 Answers   Heisco,

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in control valve is constructed as per API 6D or API 6A, then which standard is used for fire testing of valve?.

1 Answers  

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TRANSDUSER MOSTLY CONVERT WHICH ENERGY INTO ENERGY ?

6 Answers   DVC,

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WHICH INSTRUMENT USED TO CALIBRATE CONTROL VALVE?

23 Answers   Exxon Mobil, Honeywell,

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Exothermic reaction./ endothermic reaction

0 Answers   CCIE,

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how to set calibration range in a DP transmitter to measure level for a closed tank and for an open tank,and also please explain me how to set calibration range for a DP flow transmitter in a line ?

1 Answers   CCL Products, IOCL,

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Can anybody tell me which type of question are asked in the interview for the FORMULATION(Pharma) as a instrumentation engineer, & question in building managment system.

0 Answers   Reddy Labs, ScienceWay,

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In bimetallic temp. Gauges why does metal strip bend? Why do we use low expansion factor metal and high expansion factor metal in bimetaliv strip?

1 Answers   Process Control Technologies,

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Why 24VDC power Supply is used as standard for all loop powered transmitters?

8 Answers   Lupin,

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what is effect of specific gravity in differential level transmitter , explain formula related with this .

0 Answers   Flour Tech Engineers (P) Ltd,

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What is the difference between pneumatic and electro pnematic positioner?

3 Answers   TCS,

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Can anybody explain about wellhead control system.

1 Answers  

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