Answer / morsli

HI ,you have to do on first time the derivative action Td at 0 value to eliminanate a derivative action Td =0 and the integral action at maximun means 1/ti=1/maximun =0 and you have to adjust the propotional band to minimun value till you have cycling ,and if u have cycling you adjust the proportional band to twice of cycling value ,you fix the of the proportional band then you adjust integral band same as the proportional ,you decrease the reset value till you have cycling and then you multiply this value on twice ,and you set this integral operational value

Air pressure in a pressure vessel can rise or fall at up to 2.5kpa/s.The pressure is sampled every 0.5 seconds.If range of the the pressure indication is 0 to 1500 kPa, what is the max value of the error due to sampling in % of Span

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Explain , how timer based pneumatic control valve will work ?

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i have height of stem drum level 1000mm.how i calculate the DP transmitter

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hello friends, can you please send me the model paper or question paper to be prepared for hpcl examinations????????? You can mail me at rahim_here@yahoo.com waiting for your reply........... help me .. plz.....

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What is feedback system.

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