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I would like to ask everyone for advice

2020-01-15View Original

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2 sets of sensors: 24V positive and negative terminals plus three signal wires; once powered, a 4-20mA current is generated at the output terminal. When connected to a DCS (with isolation), two of the signal outputs from one set of sensors produce a current, while one does not. The other set outputs normally; what could be the cause? Three abnormal sensors were replaced, and all had the same issue
Reply #22020-01-15
The description is terrible, 78 trash. . . I don’t understand football. It’s painful to watch the game. Urinate to relieve stress.
Reply #32020-01-16
Hehe, it’s my fault. Simply put, a sensor has three signal outputs; when connected to the DCS, one of those outputs doesn’t have any current flow
Reply #42020-01-17
“\"A sensor has three signal outputs,\" are all three of those signal outputs 4-20mA current signals? How is it achieved? All sent to DCS too? Then not multiple times at once? Is a 4-20mA current signal throughout the line not sufficient to send to the DCS?
Reply #52020-01-19
Move the normal set to the abnormal position and see what happens. Use this to determine what the problem is.
Reply #62020-03-15
Thank you, the problem is solved; there was an issue with the entire circuit.

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