Answer Posted / ravi sankar

we can calibrate the control valve by using source meter
which is used to give 4 to 20 ma source to I/P , if any
error in the I/P ,we can adjust the zero or span of I/P.if
any error in the valve position ,adjust the zero or span in
the posisner of the control valve.

3. Differentiate between ultrasonic flowmeter and radar type flow meter.

2934

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what will the sending unit in the fuel gauge utilizes?

1891

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How can you add value to this Industry if offered the job?

1562

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why we are using digital signals for I/O & how to measure this signals is getting or not ?

1969

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How we connect a instrument with ground, Give brief explanation with help of diagram?

2082

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What is the calibration procedure of Drum level transmitter if range is 0 to -400 mmh2o in lab?

2092

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please can any one tell me clearly about pid tuning i am confusing about this .how to tune pid easly?

2227

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What are the types of control valves available

2083

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We are using Rosemount 5400 series Radar Level Transmitters in all types of Sump Applications having oily water hdrocarbon petrochemical nature. What we are facing the problem frequently is that always getting reading frezzed at some value. If we do power recycling , sometimes it is working . then making same freezing problem. If anybody faced before such type of problem and also having solution , Please give the answer.

2318

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How can we use feedback signal frm rtd for monitoring and in dcs for controlling ,then which type of rtd is sutaible 2 , 3,4wire and why ?

1606

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How does a single acting, spring return ball valve actually work? Does it require continuous air supply? 

2120

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Explain the use of hair spring in the pressure gauge.

1080

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Which topics are covered in Process Control?

2137

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What is motion balance principle?

1154

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whats the abbreviation of IOP? is it instrument of power or input open problem?

1141

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