Answer / varatha

should ask for the data sheet

what is the basic working principle of I/P and Positioner in any control valve.

12 Answers   Essar, Visa Steel,

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if RTD damage in plant, how we know?

5 Answers   Reliance,

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Q- Control problem are mainly classified in _____ types. a-)4 b-)3 c-)6 d-)nono of these Few of them i know is 1- regulator type problem (eg- Air conditioner) 2- tracking problem (eg missile trcking problem) 3- sybernatics 4- optimal control problem

0 Answers   Sail,

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what is use of communication wire in multipare cable(oil and gas field), why this communication wire not used in single pair cable?

0 Answers  

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how we can measure the interface level?is it possible to measure interface level with dp or pressure transmitter?

2 Answers  

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what is the zero elevation and zero supresstion in level measurement, how can use it?

2 Answers   GAIL,

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What are the uses of orifice plates?

0 Answers  

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wht is dcs architecture ? can u give example?

3 Answers  

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What is the use of +/- 20ma in analog measurement,and which instrument gives +/-20ma output

1 Answers  

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What is inside the PLC panel? How does instruments communicate to DCS computer via PLC? What is the type of wiring in PLC connections? Please answer... Thanks

1 Answers  

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explane hart protocol? what is its advantages.

3 Answers   Jindal,

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Why we use 4 - 20 ma?

6 Answers   IJT, ONGC,

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