Answer Posted / shan

It is simply by using a source meter or loop calibrator.
Inject 4-20mA to the current-pneumatic converter and check
the response of the valve. If you notice that an error
occurs,you can adjust zero or span at the control
positioner...

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

2145

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Explain pH, Conductivity.

2204

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need to calculate flow rate with the help of dp range and orifice bore dia and size. range is 0 to 400 inwc and orifice size is 12 inch 150 # rf and bore dia is 7.180 inch. need to calculation for flow rate

1367

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Explain the use of hair spring in the pressure gauge.

1140

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Specific gravity.

1932

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What is the difference between working pressure and calibration pressure of a control valve

3122

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what is KV and XV valve

1843

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what is span value and zero ? and how set ?

1639

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What are different types of orifice plates?

1266

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please send the sample qustion paper for iocl written test ..

3759

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What happen if I install my pressure transmitter below the elevation of pipe in natural gas service?

1251

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which type of zones used for boiler? & why ?

1910

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why orfice is not used for main steam flow calculation

2184

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Emergency Shutdown Systems/ Plant Shutdown System.

2320

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i am from instrument branch i want paper patern of mahagenco . any pevious years paper regarding my branch send me please . please.....

2140

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