Suppose this valve control system has a problem. The control valve (LV-104) does not move to the full-open position as it should when the solenoid is de-energized, although it will move when the 4-20 mA current signal to the I/P transducer is varied while the solenoid is energized:
Solenoid Valves Problems
Identify the likelihood of each specified fault for this circuit.
Consider each fault one at a time (i.e. no coincidental faults), determining whether or not each fault could independently account for all measurements and symptoms in this circuit.
Answer :
The below tables shows the solutions, showing possible faults and Impossible faults.
Share Your comments on the below answers.
In two weeks ago when I came into “instrumentation tool” usually has facility “save”, but right now its facility don’t appear.
If this is available, it is very help me and another guy to save in format “pdf” in external memory for further read in laptop.
Is it possible your side ( instrumentation tool ) to active again the facility ” save”
Regards,
Supeno Adi
From Today on wards, you can directly save the content from the website. Restrictions removed, users have the access to copy/download the articles for their personal use.
This is a great decision! Thank you.
Your articles are good enough to be archived and reread when required. Not every time its possible to go online. Keep going!
Thanks a lot, keep up the good work.
Share knowledge to improve (y).
Its highly useful, waiting for long time. Thanks bro.