Answer / kumar

Differential pressure : input pressure - output pressure
Delta pressure : pressure drop

I am applied 100 % pressure on to the air to open control valve,but the valve is not fully closed..and 10-15% is open the valve. how to calibrate the control valve?

3 Answers   OPaL,

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What is the minimum rating availalbe for weld neck orifice in market?

0 Answers   Jindal,

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In case of Transmitter's(e.g.Ultrasonic Flow meter ) we have an normal practise of selction of upstream and downstream distance such as (20D and 5D ).can anyone please let me know whow to calculate "D" ?? i guess it refers to pipe thickness is t right ?

2 Answers  

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what are level of automation & how these are distinguished ?

3 Answers  

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How to convert 0-2500mmH2o into kg/hr? Or how to convert mmH2O into kg/hr,t/hr etc

2 Answers  

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what is piezo electric transducer?its principle?

2 Answers  

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send me last 5 years questions asked in rrb chennai, for section engineer

0 Answers   RRB,

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What is the difference between ROM & RAM .

1 Answers   Sabic, SPIC,

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what is the difference between transmitter and smart transmitter ?

4 Answers   Aditya Birla,

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What is meant by Fail Safe Condition in PLC?

4 Answers  

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how works encoder in plc

0 Answers  

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What kind of feedback is used in DP cells.

1 Answers   CCIE,

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