Manual Integrator Supercal 531 06-06-2011 9
EN1434-2 2004 stipulates the following maximum cable lengths for 2-wire temperature sensors:
0.22 mm2 2.5 m 12.5 m
0.50 mm2 5.0 m 25.0 m
0.75 mm2 7.5 m 37.5 m
1.50 mm2 15.0 m 75.0 m
2.4.2 4-wire-cable sensor
For installations with cable lengths of more than 3 m or with different cable lengths, we recommend
using 4-wire-temperature sensors. The maximum cable length of the 4-wire temperature sensors is
50 m.
The connection cable must have four wires. The wire cross section should be at least 0.5 mm2.
The insulation of the temperature sensor cable should be of PVC or silicone. Sontex recommends
the use of silicone as insulator.
1 / 5 and 2 / 6 3 / 7 and 4 / 8
temperature high temperature low
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