OleumTech H Series - 6. WIRING DIAGRAMS; 1. Electrical Connection

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DIFFERENTIAL PRESSURE TRANSMITTER - USER GUIDE
6. WIRING DIAGRAMS
1. Electrical Connection
a. RS485 Wiring
i. Use twisted wire pair.
ii. The last RS485 device in the chain requires a 120 ohm
termination.
Terminal
4-Wire
+
Power+
-
Power-
A
TR+
B
TR-