i am working in the automation company...i want to just know
how actully pid control valves are tune????...
Answer / sumith
PID control valves works on 4-20 ma ,plc gives 4-20 ma to
pid valve according to the difference between setpoint and
actual value (for e.g s.p temp = 90 degc actual = 30
degc)now plc will give 20ma to pid valve for temp to reach
the setpoint.pid valve should have continous air supply.
to calibrate pid valve there is span and zero adjustment.
pid tuning is done in plc not in valve.pid tuning in plc is
trial and error type tuning.
we have to some values in P and I and D and check whether it
is reaching the setpoint smoothly
Is This Answer Correct ? | 3 Yes | 2 No |
Can a Differential Pressure Transmitter be used as a normal pressure transmitter??
I heard that we can use flow transmitter for level measurment also hw it is?
What is the procedure of changing a Faulty Module of Allen Bradley PlC without stopping the Process
what is the calibration procedure for transweigh make weigh feeder?
How to work temperature gauge?
How does pyrometer works?
what is the use of impulse line in AFBC boiler , WHY WE CONNECT IMPULSE LINE TO TRANSMITTER , DRFT GAUGE ETC ????????
What is the calibration procedure of Drum level transmitter if range is 0 to -400 mmh2o in lab?
what is commissioning.
what is the best method to measuring level in high pressure and temperture thank?
How d.p. Transmitter can be applied to open tank?
For what Wake Frequency Calculation is used?