Tecfluid COVOL Series Manual de usuario descargar pdf (Pagina 16)

9 ADDITIONAL INSTRUCTIONS FOR THE ATEX VERSION

This chapter only applies to equipment intended for use in explosive atmospheres.

9.1 Intrinsic safety

The flowmeters of series COVOL, when include just the reed sensor and the connector,

can be considered simple apparatus as defined in the EN 60079-11 standard. In these

cases it can be installed in hazardous areas provided that they are connected to a zener

barrier or to an intrinsic safety isolator. Please consult factory for the recommended

models.

9.2 Flameproof enclosure

These equipment conform with the directive 94/9/CE (Equipment and protective systems

intended for use in potentially explosive atmospheres) as indicated in the EC-type

examination certificate LOM 14ATEX2006 X and its marking.

Given that this instrument belong 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.

8 K FACTOR (PULSES / LITRE)

Measured values for water at 20 ºC

Pulses / litre

± 12%

/ pulse

± 10%

10 / 1/4” (H)

100 10

20 50

10 100

4 250

2 500

1 1000

100

0,2 5000

1 2 ... 11 12 13 14 15 16 17 18 19 20 21 22 23 24

Sin comentarios

Tecfluid COVOL Series Manual de usuario Pagina 16