Ii 2g c t6, Pilot valves – Burkert Type 8690 User Manual
Page 9
9
Basic safety instructions
3.1.2. Media in the Ex area
If explosive media are used, this may create an additional
risk of explosion!
3.1.3. Valves in the Ex area
The valve may restrict use in an explosive atmosphere.
Follow operating instructions for valve.
3.1.4. cleaning in the Ex area
Test cleaning agent for approval in explosive atmosphere.
3.1.5. adhesive label for EX area
ii 2g c t6
Device group
Device category
Temperature class
Fig. 1: Label EX area
3.1.6. Temperature ranges and electrical
data in the Ex area
Pilot valves
A detailed description of the data for the pilot valve can be
found on the internet under
► Type 6144.
temperature class t6:
Max. permissible surface temperature for T6 85 °C
max. permissible
ambient temperature
[°c]
max. permis-
sible output [W]
ignition
protection
type
explosion
group
0 – +55
0,4
Ex ia
IIC
0 – +50
0,5
0 – +45
0,6
0 – +40
0,7
0 – +35
0,8
Tab. 1: Temperature ranges Ex area
Version type
6144
resistance
r20 [
Ω
]
minimum terminal
voltage [V]
minimum
current [ma]
High-impedance
version
510
11,7
23
Tab. 2: Pilot valve data Ex area
english
Type 8690 Ex