4B RG1V56A Manual de operação - Página 8

Procurar online ou descarregar pdf Manual de operação para Equipamento industrial 4B RG1V56A. 4B RG1V56A 16 páginas. Rotary level indicator

All wiring must be In accordance with local and national electrical codes and should be undertaken by an

experienced and qualified electrician.

The conductors forming the power supply and signal carrying cable must have an adequate cross-section

so that the current density, in each conductor, is no higher than 4 A/mm . One of these is used only for the

earthing of the level gauge.

The cross-section of the conductors must also be adequate in relation to the length of the cable used to

avoid a drop in voltage along the cable over the values prescribed by the regulations on the subject. It is

likewise recommended to use flexible cables with an adequate outside diameter for the cable entries used

(not supplied) to ensure a correct sealing of the cable gland on the cable.

External ground connection can be found on the outside of the level guage next to the cable entry. It is

realised via M5 screw and eyelet cable crimp.

- The external earthing has to be carried out by the installer.

- The equipment has to be protected against impact and electrostatic inside the silo.

- The user has to protect the equipment circuits with fuses against short circuit.

- The maximum surface temperature is determined taking into account a safety margin, but without

considering a possible dust deposit on the equipment.

Use exclusively cable glands certified according to directive 2014/34/EU, Category 2 and EN60079-

31 (as applicable).

The terminal box contains a screw which is marked by the earth symbol (Figure 3). This screw

must be connected to the Earth core of the power cable. The earth connection of the level gauge is

compulsory.

4B Rotary level indicators need no routine maintenance. Possible extraordinary maintenance is restricted

to replacing parts that are deteriorated by use. The gauge must not be lubricated, the shaft, the only

moving part is mounted on ball bearings with permanent lubrication.

STANDARD WIRING DIAGRAM

WARNING

Figure 3 - Earthing detail.

NOTE

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