Burkert Type 2002 - Manual (Page 7)

7
Basicsafetyinstructions
3.1.6. adhesive label for ex area
ii 2g c iic t4
ii 2d c t135°c
Warning: not valid when non-ex devices added
Warning: potential electrostatic charging hazard
-see instructions
Fig. 1: Label Ex area
3.1.7. temperature ranges in the ex area
max. t
environment
medium
<
– 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 0
10
20
30
40
50
60
70
80
90
100
110
120
130
140
Temperature class T6
Temperature class T5
Temperature class T4
Medium temperature [°C]
Ambient
temperature
[°C]
Valves
<
– DN 25
Valves
> DN 25
Fig. 2: Temperature ranges Ex area
3.2. special conditions
To ensure potential equalization, ground the valve body to the pipe
system using an electrically conductive connection.
For use in Ex area zone (gas) 1 and 2,
zone (dust) 21 and 22, applies:
Danger!
danger of explosion caused by electrostatic charge!
In the event of a sudden discharge from electrostatically charged
devices or individuals there is a risk of an explosion in the Ex area.
• Implement suitable measures to ensure that there are no elec-
trostatically charges in the Ex area.
• Only clean the surface of the device by gently wiping with a
damp or anti-static cloth.
Follow instructions for use in the Ex area! See chapter “3.1”.
english
Type 2000/2002