Tecfluid AD Series, Instruction Manual

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19 ADDITIONAL INSTRUCTIONS FOR THE ATEX VERSION
This chapter only applies to equipment intended for use in explosive atmospheres.
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 in its marking.
Given that this instrument is group II, it is intended for use in places likely to become
endangered by explosive atmospheres, but not in mines.
The category is 1GD, that is, it is intended for use in areas in which explosive atmospheres
caused by mixtures of air and gases, vapours, mists or dust are present continuously, for
long periods or frequently.
19.1 Non-metallic parts
WARNING: POTENTIAL RISK OF ELECTROSTATIC CHARGE
The front of the housing consists of a transparent plastic window in order to let the user see
the position of the pointer on the scale.
Since the danger of ignition by electrostatic discharge when rubbing this window can not be
avoided, the instrument must always be cleaned with a damp cloth.
WARNING: RISK OF IMPACT
Because the housing base is made of aluminium, the equipment must be installed and
operated always in locations at low risk of impact.
WARNING: WIRING
The wiring of the variants containing transmitter and inductive sensor must be kept
separated.
19.2 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.
Earth connection