how to design orifice plate?what is the equation?

0 Answers   REL,

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A valve in series with an orifice plate (DP transmitter), is aligned for constant pressure in the pipeline, if there is an error dx, How to align it in process.

0 Answers  

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Why 250 or 500 ohm load resistance is use in any transmitter

2 Answers  

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what is dead weight tester and where it is used?.

11 Answers   DuPont, Jain steels,

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how can calibrate pressure transmeeter in the feild ?

1 Answers  

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can anyone tell me about the basic concepts to consider before to start a PLC panel wiring

0 Answers   ABB,

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Using your own examples solve a problem involving normal table. (experimental method and analysis)

0 Answers  

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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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what is the role of proportional in process control?

6 Answers   OGDCL, Trident,

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what is diff b/w neutron and ground?

3 Answers  

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transmitter in 3 connection +,-,And test mode so how Use To Test Mode

1 Answers   Essar,

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In field side transmitter voltage droping here no loose connection then what will happen?

2 Answers   Edac,

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