Pilot Valves - Burkert 8690 Manuel D'utilisation

Type 8690 Ex
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
Device group
ii 2g c t6
Device category
Fig. 1: Label EX area
Temperature class
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
www.burkert.com ► Type 6144.
temperature class t6:
Max. permissible surface temperature for T6
max. permissible
max. permis-
ambient temperature
sible output [W]
[°c]
0 – +55 0,4
0 – +50 0,5
0 – +45 0,6
0 – +40 0,7
0 – +35 0,8
Tab. 1: Temperature ranges Ex area
resistance
Version type
Ω
6144
r20 [ ]
High-impedance
510
version
Tab. 2: Pilot valve data Ex area
english
85 °C
ignition
explosion
protection
group
type
Ex ia IIC
minimum terminal minimum
voltage [V] current [ma]
11,7 23
9