What is a snubber circuit?

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What are the charecterstics of control valve.

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How Honeywell FSC is functioning and what is its purpose? Can we bypasa it and only use DCS instead of that.

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Where are use of pressure,level,flow switches?and what is input and output

3 Answers  

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what is controlling card in dcs? how u measure dcs memory?what is bus in dcs?how u know dcs speed n ehternet speed?

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

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Explain the mechanism behind the turbine meter.

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which is the best type to measure level of a Tank(water). Displacer or Differential Pressure method?

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I have a problem with a valve (air to close). When it is fully closed and try to open 1% it doesn't responce till 3% open suddenly more than 3% then back to 3%. I tried to tune positioner then removed it, the problem still exist. Any idea

3 Answers  

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sir, i preparing hpcl,ongc,barc,hal exams(instrumentation engg)pls send a placement papers

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what is concept of field,control room area in transmitters?

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How 2 calibrate level tank having large height..?

2 Answers  

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