7. Starting, operation
Screw in or unscrew the instrument only via the flats using a suitable tool and the
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.
Electrical connection
Connect the instrument to earth via the pressure connection.
Use power supplies which guarantee reliable electrical isolation of the operating
voltage as per IEC/DIN EN 60204-1. Consider also the general requirements for PELV
circuits in accordance with IEC/DIN EN 60204-1.
Ingress protection per IEC 60529 (The ingress protection classes specified only apply
while the pressure sensors is connected with female connectors that provide the corre-
sponding ingress protection).
Ensure that the cable diameter you select fits to the cable gland of the connector.
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
moisture.
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Betriebsanleitung/Operating instructions/Mode d'emploi/Instrucciones de servicio
GB