why the discharge pressure of ID fan showing negative at fan running condition.(boiler operating condition.)

5 Answers  

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how to measure low temperature(<100 dec celsisus) with non condact sensor

2 Answers  

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please send me hpcl placement papers

13 Answers   HPCL, L&T,

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which type of signal used in instrument?

3 Answers   Emco, Makson, Sail, TATA,

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what is lead lag compensator and for wat v using that???

3 Answers  

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What is the role of P(Protional), I(Integral) and D (Derivative) in PID Controller?

9 Answers  

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Flame scanner

1 Answers  

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Which type of diagphram use in costic line,DM water line,natural gas line,oil line?

0 Answers   Hindustan Zinc,

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What is the difference between conductive lined pipe and conductive unlined pipe? Why do we see that?

0 Answers   Process Control Technologies,

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what is thermopile?

1 Answers   HNG,

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Please anyone answer my question, what is the difference between single acting and double acting control valve, in what condition we better choose single acting rather than double acting

2 Answers  

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how to measure level under ground tank ? which type of transmitter very accuracy ?

3 Answers   Biocon,

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