WIKA WUC-1 Série Mode D'emploi page 12

7. Starting, operation
If long connecting cables (greater than 30m) or leads outside buildings are to be used, use shielded
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wires. Note that with plug connectors, no connection between cable screen and housing is possible. Take
care, therefore, for installations in explosion hazard areas, that equipotential bonding is used.
For instruments with cable outputs, the cable is always shielded. Depending upon the design (ordered
EN
version) the screen may or may not be connected with the enclosure. Also provide for equipotential
bonding here, if necessary.
Ensure that the cable diameter you select fits to the cable gland of the connector Ensure that the
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cable gland of the mounted connector is positioned correctly and that the sealings are available and
undamaged. Tighten the threaded connection and check the correct position of the sealings in order to
ensure the ingress protection
Cover flying leads with fine wires by an end splice (cable preparation).
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Please make sure that the ends of cables with flying leads do not allow any ingress of moisture.
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The transducer must be connected and operated in accordance with the approriate regulations. Take
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care to ensure that the electrical connection (e.g. M12 connector) is correctly made (fully sealed).
WARNING!
For equipment with Ex nA ic and Ex ec ic certification, or if operated under nA ic or ec ic conditions: Do
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not separate when energized.
For products with FM Approval: The connection between cable and connector shall withstand a tensile
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force of min. 15 N
The transducer is designed to operate with an input voltage of DC 10 ... 30 V / 14 ... 30 with output signal 0 ... 10 V.
The voltage value Ui = DC 30 V shall not be exceeded in the current loop circuit. The interrelationship between voltage
supply and load resistor (R
Signal output and allowed load
4 ... 20 mA, 2-wire
permitted range
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) is illustrated by the following diagram.
A
Current output (2-wire)
4 ... 20 mA:
≤ (U+ – 10 V) / 0,02 A
R
A
Voltage output (3-wire)
0 ... 5 V: R
0 ... 10 V: R
with R in Ohm and U+ in Volt
A
> 5 kΩ
A
> 10 kΩ
A
WIKA operating instructions, model WUC-1x