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Dinel, s.r.o. PDU–4xx–W
The unit is not equipped with an internal fuse or power supply circuit breaker. Because of this an ex-
ternal time-delay cut-out fuse with a small nominal current value must be used (recommended bipolar,
max. 2A) and a power supply circuitbreaker located near the unit. In the case of using a monopolar
fuse it must be mounted on the phase cable (L).The power supply network cable diameter must be
selected in such a way that in the case of a short circuit of the cable from the side of the unit the cable
shall be protected against destruction with an electrical installation fuse.
Note: In case of measurement (evaluation) of the values from the level meter located in areas with
explosion hazard, it is necessary to install an isolating repeater between the PDU display unit and
the level meter.
7. Electrical connection
Fig. 3: Connection diagram - level meter with current output to PDU unit, using internal power source
Fig. 4: Connection diagram - level meter with current output to PDU unit, using external power source
Explosive areas
Connection of the sensors with shielded cable
internal connection
