what is orifice plate? Give me best answer?....plz

5 Answers  

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in my company organisation in plan to take new PLC system for replacing old relay system , for that what I/P needsd to submit to the system house of PLC supplier?

1 Answers  

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what is gas metering system? gas chromatograph? and gas compressors?

0 Answers   HPCL,

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Can anybody please let me know Orifice plate sizing calculation formula and step by step procedure

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what's meanning of 1250KVA and how to calculate with Volttage and Current. answer give with example.

3 Answers  

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How many interlocks at turbine side?

0 Answers   Edac, SRF,

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How to work mass flow meter ?

1 Answers  

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Any one can help me to identified, how can we interchange the device in FF

0 Answers   Ion Exchange,

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What is furnace draft control?

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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 =

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different between calibration range and instrument range ?

2 Answers  

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how to calibrate steam control valve in steam turbine

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