6. Commissioning, operation
6.2 Electrical mounting
The instrument must be earthed via the process connection.
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For instruments with voltage output, use shielded cable, and, if the cables are longer than 30 m or they leave the
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building, earth the shield at least at one end of the cable.
EN
In North America, use the instrument in line with "class 2 circuits" or "class 2 power units" in accordance with CEC
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(Canadian Electrical Code) or NEC (National Electrical Code).
Select a cable diameter that matches the cable gland of the plug. Make sure that the cable gland of the mounted
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plug has a tight fit and that the seals are present and undamaged. Tighten the threaded connection and check that
the seal is correctly seated, in order to ensure a tight seal.
For cable outlets, make sure that no moisture enters at the cable end.
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Connection diagrams
Angular connector DIN 175301-803 A
Wire cross-section max. 1.5 mm
Cable diameter 6 ... 8 mm
Circular connector M12 x 1 (4-pin)
18
2-wire
3-wire
U +
1
1
U -
2
2
S +
-
3
2
2-wire
3-wire
U +
1
1
U -
3
3
S +
-
4
Cable outlet, unshielded
U +
U -
S +
Wire cross-section 3 x 0.5 mm
Cable diameter 6.8 mm
Cable lengths 1.5 m, 3 m, 5 m, 10 m, 15 m
WIKA operating instructions pressure transmitter, model S-11
2-wire
3-wire
brown
brown
green
green
-
white
2