Solenoid Valves Practical Problems

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

Solenoid valves Practical 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.

Solenoid Valves Problems

Answer :

The below tables shows the solutions, showing possible faults and Impossible faults.

Share Your comments on the below answers.

Solenoid Valves Problems and Solutions

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5 thoughts on “Solenoid Valves Practical Problems”

  1. 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”

    Supeno Adi


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