WIKA FLM - Handbuch (Seite 15)

GB
WIKA operating instructions level sensor model FFG 15
13445627.01 12/2010 GB/D/F
Observe the general prescriptions of installation!
The connections on the separating amplifier are marked
accordingly. During connection of the poles, there will be no
current flow.
Potential balance and PE connection
Grounding or potential balance can be via the earth termi-
nal at the bottom side of the probe head.
Protect the probe head against the ingress of water!
Safe sealing of the cable inlet is safeguarded from a
5 mm outer diameter of the cable.
Tighten cable glands. Lock lid of probe head.
Wiring of the level sensor for supplying purposes (in Ex, preferably
blue cable) is by a dual-core cable. The cable cross-section is to be
selected so that the supply voltage to the sensor is no less than 10 V in
the borderline case of maximum current consumption (21.5 mA) with a
given cable length L.
Fig. 4: Electrical connection of the level sensor
5. Electrical connection