Instruction manual

5.0 WIRING SM425 INSTRUCTION MANUAL
5.2 Wiring for Detector Output
This wiring enables the converter to receive cell output from the detector, output from a thermocouple,
and a reference junction compensation signal. Install wires with 10Ω of loop resistance or less. Keep
detector wiring away from power wiring.
Separate signal and power wiring.
Figure 5-4 Wiring for detector output
If shielded cables cannot be used between the detector and the terminal box, (for example when heat-
resistant wiring is used), locate the detector and the terminal box as close together as possible.
5.2.1 Cable Specifications
PVC sheathed PVC insulated cable (six core) is recommended for wiring the SM425. When the ambient
temperature of the detector exceeds 80°C, install a terminal box. Connect the detector using six-piece
600-V silicon rubber insulated glass braided wire.
5.2.2 Connection to the Detector
To connect cables to the detector, proceed as follows:
42500001 REV A 85