Electrical Connection - Sika VVX-Serie Betriebsanleitung

Electrical Connection

3 Electrical Connection
The electrical connection of the VVX is made via an M12x1 plug mounted on the cover of the
electronics housing.
CAUTION
The electrical connection may only be carried out by a qualified electrician.
 De-energize the electrical system before connecting the VVX.
IMPORTANT
Exceeding the specified limits will cause damage to the device's electronics. In
the absence of current limiting, there is a risk of fire due to device overheating.
 Always connect the VVX to an electrical source with power limitation.
Optional wiring
All VVX are configured to allow one flow output (frequency or analogue) to be wired as stand-
ard.
Depending upon the selected configuration, an optional temperature output, alarm output or
analogue output can also be wired.
Connection cable
Matching connection cables with female connector M12x1 are available in a various lengths
as SIKA accessories. Shielded connection cables are not necessary.
The connection cable should be fixed near the sensor. This can counteract a negative influ-
ence on the measurement result in case of strong vibrations in the environment.
IMPORTANT
Observe the temperature resistance of the connection cable at high media tem-
peratures.
If the maximum operating temperature is less than the media temperature, avoid
direct contact between the cable and the pipe.
Connection M12x1 plug
 Screw the coupling socket of the connection cable onto the plug of the VVX.
 Tighten the knurled nut of the coupling socket (do not exceed 1 Nm torque).
Earthing for VVX32 / VVX40
The metallic pipe section should be earthed if possible. A borehole M4x6.5 is provided on the
pipe section for this purpose.
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VVX