Burkert Type 2731 - Manual (Page 7)

3.1.2 Media in the ex area
If explosive media are used, this may create an additional
risk of explosion!
3.1.3 control unit in the ex area
The control unit may restrict use in an explosive atmosphere.
Follow operating instructions for control unit.
3.1.4 cleaning in the ex area
Test cleaning agent for approval in explosive atmosphere.
3.1.5 adhesive label for ex area
achtung: in ex-Bereichen darf die Oberfläche
nur mit einem feuchten tuch gereinigt werden
cautiOn: in hazardous areas the surface
may only be cleaned with a wet towel
II 2G c T4 IP65/67
II 2D c T135°C Warnung: Im Ex-Bereich Oberfläche
nur mit feuchtem Tuch reinigen
Warning: In Hazardous Areas the surface
may only be cleaned with a damp cloth
Nicht gültig für angebaute Geräte
Not valid for added devices
Fig. 1: Label Ex area
3.1.6 Temperature ranges in the ex area
max. t
environment medium (seat seal ptfe)
≤ dn 25
> dn 25
T6 85 °C -10 - +45 °C -10 - +55 °C
T5 100 °C -10 - +60 °C -10 - +70 °C
T4 135 °C -10 - +95 °C -10 - +105 °C
Tab. 1: Temperature ranges Ex area
10 20 30 40 50 60 70 80 90 100 110 120 130
10
20
30
40
50
60
70
80
90
100
110
120
130
140
0
Medium temperature [°C]
Ambiente temperature [°C]
Temperature class T4
Temperature class T5
Temperature class T6
Valves ≤ DN 25
Valves > DN 25
Fig. 2: Temperature ranges Ex area
7
Basicsafetyinstructions
english
Type 2730 / 2731 / 2731K