On drum level, why we are using air to close Control valve?

4 Answers   L&T,

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when we calibrate the DP transmitter at that time which matrial we used in pressure pump?

4 Answers  

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Im working in a shopping center, it is also hotel and office building, two towers exactly and someone is proposing a PLC control for the HVAC system, but Im thinking of a DDC control system. in this case what is the difference between PLC and DDC control?

1 Answers  

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what are the documentation and instrument identification system used to identify the correct device to be calibrated? name atleast three.

1 Answers  

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what is hart communicater? can u give brief explanation about this issue?

3 Answers  

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how manys ways dp transmitter can be calibrated having range of -150 to 400mmwc,what side pressure u will apply?

3 Answers  

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What is feed factor and its Importance in cement industry? How we can solve feed factor?.

0 Answers  

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if we put any thermocouple on a table in a room without any connection,what temperature should it show.

3 Answers  

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What is output of Thermocouple at 25 deg c

10 Answers   TATA,

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What is cascade control in process instrumentation?

4 Answers   Engineers India, ITC Infotech,

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What is the purpose of LO Overhead tank in turbines.

0 Answers   ADMA OPCO,

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What is the detail function of I/O card in DCS ? Why we dont use the I/O directly with controller?

3 Answers   Kekran Mekran, TCE,

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