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13
3.3.
Field wiring
Always ensure that the electrical requirements of the DAT 420 gas detector meet
the capability of the associated control unit or PLC (see “Specifications”).
Please follow the instructions below:
▪
Field wiring must comply with local regulations and standards in force.
▪
DALEMANS recommend using colour coded cable with solid wires.
▪
Use a shielded or a screened twisted pair cable.
▪
The acceptable cross sectional area of the cable is
0.5 mm²
.
▪
The maximum cable length should not exceed
1000 m
.
▪
The overall cable diameter must be within the range given below.
▪
Pass the cable through the gland to the desired position, then tighten the seal nut by hand
until resistance is felt (when the seal contacts the cable). Tighten with a spanner one
further turn.
Figure 6: DAT 420 wiring
