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

4 Answers   L&T,

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Which is the best field foundation bus. ( FF ) Yokogawa, Honeywell or others ?

0 Answers   GNFC,

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How Control valve sizing is done?

3 Answers  

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what is type of protocol used in instrument field to marshalling cabinet cabel. what is the differenance between bus cabel and instrument cabel?

1 Answers   Samsung,

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How to calculate 47Liter H2 Gas cyilnder consumtion? Cylinder inlet Pressure is 200bar and Discharge pressure is 6.0bar. Flow is 100ml/min.For the above condition how many days one cylinder can be used?

1 Answers  

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What is the working principle of sox, nox analyzer?(opacity monitor) Otherwise how to measure the sox,nox?

1 Answers   Thermax,

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why we use 24v dc in instrument rahter than 230vac????

4 Answers  

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what is positive displacement meter.

1 Answers   Takreer,

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Why thermo wells are used?

1 Answers  

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what will be the output of the temparature transmitter if temp is 120 degre celcius.

1 Answers   Base Automation, NTPC, PDO,

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which type signal come control valve

6 Answers  

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how we use the positioner feed back in split range control valves?

1 Answers   Tata Power,

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