Hello everyone, I have a question: if the command line (24V voltage) is connected to the electrical conversion unit of a mechanical positioner, can the voltage be measured?
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If the voltage can be measured, what is its value? What are the differences between different models of positioners? Thank you
No voltage was measured that day, but the valve switch is fine
As long as the positioner has resistance, there will definitely be a voltage; this voltage should be 4-20 mA multiplied by the resistance of that positioner
The electrical converter provides a 4–20 MA signal, and the voltage depends on the coil resistance
Poster: A current signal of 4–20 MA is sent to the electrical converter in order to control the control valve; it’s not a \"24V voltage\". The coil of the electrical converter has resistance, and a voltage can be measured across its terminals.