Answer / jagadeesh

if the error is reduced by increasing or decreasing the
duration then it is known as integral controller and if the
error is redued with respect to the rate then it is known
as derivative controller.

Answer / gonzales

Answer given by Gnv207 very confusing

Answer / rizwan

In simple u can say

Proportional----how much controller will open or close

Integral---how long it will keep the same controller opening

Derivative----how fast controller will complete its action

Answer / mohammed emaaduddin

In Integral control, the value of o/p at any given time is the integral of the error over that period of time.
In derivative control, the o/p is proportional to the derivative of the error..

Answer / gnv207

The actual error is directly proportional to the integral
value of the error ,that type of control is called as integral
control.

The same manner the derivative control is

The actual error is directly proportional to the derivative
value of the u(t)error ,that type of control is called as
integral control.

why twisted pair of wires is used in instrumentation ?

6 Answers   ONGC,

If the Barrier Fails during online then What will be the control valve position in field or Positioner action in the field.

3 Answers  

Qatar fertilizer call me for interview as Instrumentation Project Engineer. Please let me know what kind of question they asked ? ALso they said they will take Written test, any idea about this written test ?

1 Answers   QAFCO,

Calibration of flow transmitter.

1 Answers   CCIE, Power Plant,

Why 1-5 vdc a standard?

1 Answers   Process Control Technologies,

WHAT IS THE DIFFERENCE BETWEEN PLC AND DCS

55 Answers   ABB, Adani, Adani Power, GMR, IIUC,

What unit is used for measuring comp. outlet flow. it is CFM, M3/hr or NM3/hr. ?

5 Answers   Jk Tyres,

what is vibration sensor working principal and how many types its has??

5 Answers  

How to calibrate an pressure gauge with yantrika test bench?

0 Answers  

If i have 4 Allen Bradely make RS logix 5000 PLC and for viewing that we are using 4 RS view SCADA for 4 different packages. Now, I will want to view two packages on only one SCADA. Then how i will do it?

0 Answers   Essar, Reliance,

what is Potential free contact? where it is used?

3 Answers   Engineers India Limited,

what r the different types of instrumentation cables? give their specification?

3 Answers