Additional Instructions For The Atex Version; Flameproof Enclosure; Surface Temperature; Connecting Conductive Parts To Earth - Tecfluid Series LT Instruction Manual

19

ADDITIONAL INSTRUCTIONS FOR THE ATEX VERSION

This chapter only applies to equipment intended for use in explosive atmospheres.
The equipment with AMM or AMR limit switches can be considered as simple apparatus
according to the IEC 60079-11 standard, and thus they do not need to be marked as ATEX.
The equipment with AMD limit switches can be installed in potentially explosive atmospheres
as elements of intrinsic safety. These equipment conform with the directive 2014/34/EU
(Equipment and protective systems intended for use in potentially explosive atmospheres) as
indicated in the EC-type examination certificate and its marking.
19.1

Flameproof enclosure

These equipment conform with the directive 2014/34/EU (Equipment and protective systems
intended for use in potentially explosive atmospheres) as indicated in the EC-type
examination certificate LOM 05ATEX2010 X and its marking.
Given that this instrument belongs to group II, it is intended for use in places likely to
become endangered by explosive atmospheres, but not in mines.
The category is 2GD, that is, it is intended for use in areas in which explosive atmospheres
caused by mixtures of air and gases, vapours, mists or air/dust mixtures are likely to occur.

19.1.1 Surface temperature

The equipment is certificated as Exd IIC T6.
The maximum possible surface temperature is 85ºC.
WARNING: RISK OF IMPACT
Because the housing is made of aluminium, the equipment must be installed and operated
always in locations at low risk of impact.

19.1.2 Connecting conductive parts to earth

When the instrument is not grounded securely through the connection process, it should be
grounded through the housing screw, as shown in the figure.
37
Grounding screw