in a electronic controller why we are using 250 ohm resistance in input signal?is i/p is necessary in control valve when we are using electronic controller give details?

3 Answers   IOCL,

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hiii.... can any one provide me previous years question paper of hindustan petroleum for instrumentation engineering???

0 Answers  

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Possible cause of IOP alarm in a DP transmitter: a: IOP-minimum b: IOP-Maximum

4 Answers  

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wat are the interview questions asked in air india for post service engineer

1 Answers   AirIndia, Shree Renuka Sugars,

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How to calibrate capillary type level transmitter

0 Answers  

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PLS TELL ME THE FUNCTION OR PRINCIPLE OF CREEP RELEIF VALVE..

3 Answers  

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Where are use of pressure,level,flow switches?and what is input and output

3 Answers  

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how 3 out of 2 Logic/interlocks works? give brief explanation with help of diagram.

0 Answers   Adani Power,

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what is mean by process control?

4 Answers  

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Can any body give detail about orifice sizing?

5 Answers   Essar,

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why we use condesiate parts before tranmitters?

3 Answers  

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how we calculate error in percentage when instrument calibrat

1 Answers  

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