Wika FLM Manual do Utilizador descarregar pdf (Página 15)

WIKA operating instructions level sensor model FFG

13445627.01 12/2010 GB/D/F

Observe the general prescriptions of installation!

The connections on the separating amplier are marked

accordingly. During connection of the poles, there will be no

current ow.

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

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