dynasonics TFXL, Инструкция по установке и эксплуатации

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The 4-20 mA output is polarized and since the output shares the
DC common with the power supply, reversing the connections
can cause a short circuit in the DC power circuit.
Figure 8
shows a block diagram of how the 4-20 mA interfaces with the
receiving device.
Connect the wires to the appropriate Field Wiring Terminals
within the TFXL enclosure. See
Figure 9 .
TFXL Flow Meter Receiving Device
Meter Power 11 to 30 Vdc
Power Supply
Ground
Loop Resistance
4-20 mA
4-20 mA Output
4-20 mA Ground
Figure 8
4-20 mA Block
Diagram
4-20 mA Ground
4-20 mA Output
Figure 9
4-20 mA Connections