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7. Starting, operation
Screw in or unscrew the instrument only via the flats using a suitable tool and the
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prescribed torque. The appropriate torque depends on the dimension of the pressure
connection and on the sealing element used (form/material). Do not use the case as
working surface for screwing in or unscrewing the instrument.
When screwing the transmitter in, ensure that the threads are not jammed.
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For tapped holes and welding sockets please see Technical Information IN 00.14 for
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download at www.wika.de
Electrical connection
Connect the instrument to earth via the pressure connection.
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This equipment is intended for operation with low voltages which are separated from
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the AC 230 V (50 Hz) mains voltage or voltages greater than AC 50 V or DC 120 V for
dry environments. A connection to an SELV circuit is recommended, or alternatively to
circuits with a different protective measure in accordance with IEC 60364-4-41 installation
standard.
For use in North America: The power supply for the pressure transmitter must
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be made via an energy-limited electric circuit in accordance with section 9.4 of
UL/EN/IEC 61010-1 or LPS per UL/EN/IEC 60950-1/CSA C22.2 no.60950-1 or class 2
per UL1310/UL1585 (NEC or CEC).
Operate the pressure transmitter with a shielded cable and earth the shield at least on
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one side of the cable, if the cable is longer than 30 m or if it is run outside of the building.
Ingress protection per IEC 60529 (The ingress protection classes specified only apply
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while the pressure transmitter is connected with female connectors that provide the
corresponding ingress protection).
Ensure that the cable diameter you select fits to the cable gland of the connector.
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Ensure that the 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.
Please make sure that the ends of cables with flying leads do not allow any ingress of
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moisture.
WIKA Operating instructions/Betriebsanleitung/Mode d'emploi SL-1
EN
7
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