20
Instruction for use | Supercal 5
4.7.2 Connection of 4-Wire Temperature Sensor
For installations with cable lengths over 3 m or with unequal cable lengths, we recommend
the use of 4-wire temperature sensors. The maximum cable length of the 4-wire tempera-
ture sensors is 50 m.
The connection cable must have four wires, the wire cross-section should be at least 0,5 mm
2
The insulation of the temperature sensor cables can be made of PVC or silicone. Sontex
recommends the use of silicone as insulator.
1
5
2
6
3
7
4
8
w
r r
w
w
r
w
1/5 and 2/6
Temperature high
3/7 and 4/8
Temperature low
r
1
5
2
6
r
r
w
w
3
7
4
8
r
r
w
w
4.7.2.1 Wire Cable Sensor with 2-Wire Calculator
1
2
r
w
3
4
r
w
5/6
Temperature high
7/8
Temperature low
5 / 6
Temperature high
7 / 8
Temperature low