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I have an inductive sensor which measures the movement of a plunger. The plunger feeds with fuel an internal combustion engine. There is an interface where it is shown the movement of the plunger in mm and also I can read process value and electrical value.

What is the difference between these two terms? What is process value?

Sorry for the naive question, engineer here

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  • \$\begingroup\$ Is this built into a fuel injector? \$\endgroup\$
    – Gil
    Commented Jun 14, 2021 at 2:58

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An electrical value shall represent a measurement in electrical units, like volts, amperes, ohms, henries, farads,...

A process value is a value usually used in control loop. This may have physical units (mm in your case) or even without it. It's a common practice to use normalized values \$V^*=\dfrac{V_{input}}{V_{max}}\$ it would be 0.0 if Vin=0V and 1.0 (100%) if Vin=Vmax, without physical units.

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