Cut-off valve switch feedback signal and tuning fork level feedback signal
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I would like to ask whether the feedback from a tuning fork level switch is generally a Namur signal? What type of signal is used for the feedback switch of the cut-off valve (on/off valve)? Is it a Namur signal?
Or ask whether the feedback signal for ordinary on/off valves is also a Namur signal
On the contrary. . Most are not Namur signals. Zone 0 will be considered.
The feedback from on/off valves is mostly provided by mechanical, passive contacts, which are equally safe and reliable.