IF TX SHOWS SLOW RESPONSE, WHILE A CLOSE LOOP AND WHEN WE PUT THE CONTROLLER O

IF TX SHOWS SLOW RESPONSE, WHILE A CLOSE LOOP AND WHEN
WE PUT THE CONTROLLER ON MANUAL THE PROBLEM RECTIFIED,
SO WE CAN SAY THE PROBLEM IS IN

Question Posted / muhammad asif

1 Answers
3755 Views
IFFCO, I also Faced
E-Mail Answers

IF TX SHOWS SLOW RESPONSE, WHILE A CLOSE LOOP AND WHEN WE PUT THE CONTROLLER ON MANUAL THE PROBLEM..

Answer / carl_ellis

The problem is in the controller's PID tuning, which is
tuned to be too sluggish.

All of the loop's control components work properly:
- the transmitter reports the process variable
- the controller responds to an error (albeit too sluggishly)
- the control valve responds to the controller's output, as
evidenced by switching to manual mode

The PV response as reported by the transmitter depends on
the controller's appropriate response to error. If the
controller's response to error is sluggish, then the loop's
PV response will be sluggish.

Manual mode offers a means of overriding the PID's
calculated output value and driving the output to where it
needs to be.

This question qualifies as one of the best interview
questions I've read on this site. I'll be sure to use
this question when I interview candidates.

Carl Ellis
Measure First

Is This Answer Correct ?

2 Yes

0 No

Post New Answer

More Instrumentation Interview Questions

Thermocouples work as follow:

1 Answers Dashen Brewery, Tata Power,

as an instrumentation engineer which are the things we have to know / or we must have idea about that....

2 Answers

How will you calibrate an interface level trol/normal level trol in line and in w/s?

1 Answers CCIE,

where cn i find the previous years question paper for psu exam???????//

0 Answers

1- Explain about HPM 2- What is the FSC and explain the configuration of FSC 3- explain the complete loop of vibration, how it works (field to control room) 4- What is the use of proxymitter? 5- During job your partner effected with H2S then what you have to do. 6- what type of gland packing uses when valve glind is leaking.

0 Answers

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

3 Answers

what is seebeck effect?

7 Answers

How to Calibrate Flow Switch in field

0 Answers

Hi Friends i need Electronics&Instrumentation Engg question papers for BARC written test by coming 20th May 2008 pls post ur use full info to kkumarei@gmail.com. Or for suggestions pls give one missed call to 9962122264

0 Answers BARC, Wipro,

what is the electrical operation procedure for switching on 27.6MVA electric furnace.

0 Answers Jindal,

how i can copy paste the program of smart transmitter to another smart one with hart communicator?

2 Answers KOC,

How to find out the current of two motors having same power consumption but different RPM?

0 Answers

For more Instrumentation Interview Questions Click Here