Interested to Buy Any Domain ? << Click Here >> for more details...
Answer Posted / mostafa abo el-kasem
Several reasons can cause valve hunting; it can be from signal or from hard ware
To define:
1- Check controller o/p is stable while valve “you can put it in manual mode” is hunting or not (if not stable then it could be from the configuration or from PV change, you can check transmitter/damping/configuration,)
2- If signal is ok ,then it will be hardware problem from
a. Feedback arm not fixed
b. I/P problem
c. Diaphragm damage
d. Flow irregularities
e. Positioner tuning
| Is This Answer Correct ? | 1 Yes | 0 No |
Post New Answer View All Answers
what is performance test.need defination
Where are oxygen analysers installed in cfbc boilers? What are their usual readings?
How flow can be measured with dp?
Draw a P& ID showing – orifice flange, plate, dp transmitter, isolation & bypass valves and tubing.
Hi my friends Is any one who can assist me in knowing the typical interview questions for system engineer at General Electric pty Ltd
What is the GK Value in Flowmeter?
IS there any effect of vortex in low pressure side of the transmiter after the orific in feed water line? if yes then what is the calculation?
WHAT IS MEANT BY PROJECT MANAGEMENT STRATEGIES IN INSTRUMENTATION?
Explain the working of rota meter.
what is o2 analyzer and how it measured ,what is the role of this analyzer in cfbc boiler...
Explain the difference between plc and cnc?
Why flow/pressure transmitter before control valve?
How does a single acting, spring return ball valve actually work? Does it require continuous air supply?
how to calculate control valve bonnet size?? or how to select its material?
all types of liquid analyzer principle with drawing?
