Answer / che-daniel cabardo

You can calibrate flow measurement devices by three methods: 1) wet calibration using actual fluid flow; 2) measurement check of physical dimensions and use of empirical gables relating flow rate to these dimensions; or 3) dry calibration using flow simulation by electronic or mechanical means.

why we are maintain the gap voltage in vibration probe when installing time can explain me?

1 Answers   CIL,

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How to isolate a DPT from line in the condition that process must not be disturbed,and process is also critical and no bypass is available.?

4 Answers   Descon,

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in a power plant which system are compensated?

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What is PLC(programmable logic control)?

1 Answers  

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0 Answers   TATA,

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WHICH INSTRUMENT USED TO CALIBRATE CONTROL VALVE?

23 Answers   Exxon Mobil, Honeywell,

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Determine the manipulated variable, controlled variable, and the measured variable given a description of various typical industrial processes.

6 Answers   Honeywell,

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Q1: Consider part of a control loop, which excludes the transmitter, consisting of a process, a controller and a control valve which may be represented by two dead times of 0.5 min each and three exponential lags of 0.8 min., 1.0 min. and 1.5 min. respectively. We wish to express this system as an overall first order plus dead time (FOPLD) model ie gain, time constant and process dead time. (We will see later that this is often done, to simplify controller tuning). For this exercise, gain is considered to be 1.0. (A) If the transmitter is a flow transmitter whose behaviour can be described by a dead time of 0.2 min. and an exponential lag of 0.5 min. in terms of the overall dead time and overall first order lag how can the system behaviour be approximated ? Overall dead time = Overall time constant = (B) If the transmitter is a temperature transmitter with a temperature sensor in a protecting well whose behaviour can be described by a dead time of 0.7 min. and an exponential lag of 15 min. how can the overall system behaviour be approximated now? Overall dead time = Overall time constant =

0 Answers  

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Explain Split Range Control In Control Valve Briefly.

5 Answers  

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what is the diffrence between pressure safety valve & pressure relief valve....pls

0 Answers   Oil India,

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why we are using MARSHALLING PANEL? what is the role?

5 Answers  

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what is function of SCADA , and how is it work, explain with difination

0 Answers   Bapco Bahrain Petroleum Company,

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