Answer / karthikeyan

No of gallons water flowing through a fully open control
valve with 1 psi pressure drop at 60 deg F.

Answer / yasser basahal

The CV of control valve is the capacity value of the valve

how to calibrate bubbler type level transmitter of rosemount make and how to set air flow according to the range.. give one calibration procedure with one example

1 Answers  

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I saw one P&ID 6" control valve has been connected with 8" process line, and 2" valve also connected in parallel with 6" valve. why the 2" valve connected in parallel, Is there any technical reason. please clarify. With Regards-Kittu

5 Answers   GNFC,

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I m appointed as an automation trainee engineer in small firm in that I am only the one , my company give me a project on s7-200 as i m beginner I don't know how to program so please send me the helpful site so that I complete my project before deadline....please help me out in this critical situation.

0 Answers  

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why using 4-20ma not using 0-20or why not using 1- 20ma???????

7 Answers  

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Wht should be the ratio of natural frequency (Fn) to wake frequency (Fw) and wht if goes above the rato limit?

2 Answers  

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flow transmitter formula?

0 Answers   BEMCO, Siemens, Yokogawa,

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there is one orifice plate already installed on 3" line, but my previous engineer(who is not working here) removed that tx, but now i want to take it in to the process, so now what i have to do now? flow fluid is hytherm oil of temp. 260deg & pressure is 3bar.

2 Answers  

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What is instrumentation amplifier?

3 Answers  

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What is rang ability?

0 Answers  

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If relative y axis vibration sensor is by passed, and relative x axis and absolute sensor is left working. how much monitoring i would have risked?

0 Answers  

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whats diffeence between dcs & scada operation.

3 Answers   Orchid, Reliance,

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What are the different type of instrument used in cement industry with uses

2 Answers   Lafarge,

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