How to adjust the zero & span of a control valve from the posiitioner(MIL)?

1 Answers   Bhel, SMC,

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i have done DAE in Instrumentation and Process Control. i have applied for an apprentice training in chemical company after three day my interview will be conduct but i need more information about industrial process control and controller. my e mail is imran_dilsetu@yahoo.com please tell me interview question relative to instrumentation ?

0 Answers  

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What is the Differance between Graphics And SCADA Graphics? SCADA Graphics have less access?

3 Answers   Honeywell, Thermax,

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What is the difference between uv and ir scanners? and what is the workig principle of both

0 Answers  

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why we are not using the turbine flow meter in the steam service?

0 Answers   Jaypee,

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Dear all... I have 1 0-400 duplex type RTD, I connected the A side to the temperature indicator and B side to the PLC panel, but when I have observed then found that The PLC side temp has the variation. and it was distub to other RTD temp also. so what can I do.

1 Answers  

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Can any body give detail about orifice sizing?

5 Answers   Essar,

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what is shutoff dp? why is it important for selection of a control valve?

1 Answers  

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Instrumentation symbols interpration, P& ID, Logic diagram analysis, Electrical drawing analysis.

0 Answers   CCIE,

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Why the industry's standard current standards are from 4mA to 20mA,not from 0mA or any other range?

3 Answers  

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POSSITIVE PULSE IS APPLIED TO AN INVERTER INPUT.THE TIME FROM THE LEADING EDGE OF THE INPUT TO THE LEADING EDGE OF THE OUTPUT IS 10 ns. THE TIME FROM THE TRAILING EDGE OF THE INPUT TO THE TRYLING EDGE OF THE OUTPUT IS 8 ns. WHAT ARE THE VALUES OF tPLH and tPHL?

0 Answers  

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what is orfics working in main steam line. is it increase pressure, velocity of steam flow and dicrease steam flow rate. or any other

0 Answers  

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