Answer / kyle condran

Why north America NTSC and Europe PAL
Why Metric and IMperial.

it is just the system choosen

Answer / rajendar

RPM at 60 Hz is more and RPM at 50 Hz is less.

During valve sizing from all calculation you got flow coefficient CV 12,than what it means? like for selecting pressure transmitter if your MAWP is 12 bar than you select a capsule of max. 20 bar which cover your mawp 12 in same way for selecting control valve If CV is 12 than how we use it in selecting valve??????

1 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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i am working in the automation company...i want to just know how actully pid control valves are tune????...

1 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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How much voltage we get between two wire of 4 to 20 ma output? Is this voltage up or down respectvice to 4 - 20 ma ?

9 Answers  

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How to convert milliampares into flow??

0 Answers  

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how can calibrate vacume trasmitter by HART COMMUNICATOR ?

3 Answers   Bajaj, IMECO,

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what is the principal of flow transmeter,level trans meter,presser transmeter?

11 Answers   Nestle, Reliance,

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What is the load line in control valve?

1 Answers   IFFCO,

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If a control valve is hunting means means if we are giving 50% to the cv, the cv will open at 51% then slowly slwoly it will reaches 49% , then it will reaches again 50%, this type of action occured frequntly.. so what to do for solve this problem. The possible cause is in volume booster or positioner's relay.. positioner is double acting .. and make siemens..sipart.The cv is double acting and mounted for anti surge operation, it having 4 nos. volume booster, one sov, one positioner, etc..?

2 Answers   Gujarat Fluorochemicals Limited (GFL), Shell,

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Which of the following instruments consumes maximum power during measurement?

3 Answers  

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wht is Zero Elevation and Zero Suppression?

12 Answers  

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