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Ii 2g c t6, Pilot valves – Burkert Type 8690 User Manual

Page 9

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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

www.burkert.com

► 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 [

]

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