An electronic p controller has an input range of 1-5v, and
output range of 4-20mA, while testing a step change of 0.4
was applied at the input , the PB setting was 50% ,what
should be the change in the output ?
Answer Posted / abhishekk
as PB is given 50%, so Prop gain would be (100/PB)..in this
case it is twice(prop gain)...now as we know for the change
of 1 v in input we get 4ma change in output..so for 0.4 the
change will be 1.6ma WITHOUT using P controller...BUT we
have Prob gain is 2 so change in output will be 1.6*2=3.2ma
hence change in output is 3.2ma
ok..!!!
Is This Answer Correct ? | 18 Yes | 1 No |
Post New Answer View All Answers
How to control flow variations in magnetic flow maters..... When i will provide proper earthing?
all questions related to instrument technician in any offshore oil and gas company.
What is difference between radial vibration and axial vibration explain in detail .
centrifugal compressor interlock? Tell me the parameter at which compressor will trip
What are the interlocks we have to check during the start up of LP/HP compressor?
Why we are using DPT(Differential Pressure Transmitter) in separator instead of level trasmitter?
where cascade loop use ?
how works encoder in plc
Which type of diagphram use in costic line,DM water line,natural gas line,oil line?
what is the calibration procedure for magnetic flow meter @ onsite
anybody having Qatar Petroleum questions for instrument Technician offshore ....please send me
I want to measure and control level in tank of size 10*5 filled with gasoline, so plz give me the solution with clear details. how to select transmitter and sensors.
what is SIL 1 2 3
How to calibrate smoke Dectector
How can we test a bently nevda 3500/42M accelerometer monitor card by simulating it with test equipment?. what king od of signal (milli volts or volts or or resistance ) we should feed in the terminals of the card?