Burkert Type 8681 - Manual (Page 18)

18
Technical Data
6. TeCHniCal daTa
Operating Conditions 6.1.
Danger!
danger of explosion in explosive atmosphere (only in the event of a fault as zone 2)!
Do not expose the device to any mechanical or thermal loads that will exceed the limits described in the oper- •
ating instructions.
Warning!
risk of injury from overheating of the control head.
Heating above the permitted temperature range can endanger people, the device and the environment.
Do not expose the device to any mechanical or thermal loads that will exceed the limits described in the oper- •
ating instructions.
ambient temperature: Standard version: -10 ... +55 °C
Explosive atmosphere (zone2): +5 ... +55 °C
protection class: standard version:
ip65 / ip67 according to en 60529
(only if cables, plugs and sockets have been connected correctly, the VA hood
has been closed correctly and the adaptation to the process valve was done
correctly)
ip69k according to iec 40050-9
(Housing seal with connected exhaust air line instead of silencer and ideally
closed cable glands confirmed through IP69K Standard testing)
Version for use in explosive atmosphere (zone 2):
ip64 according to en 60529 and requirements to en 60079-0: 2009
(only if cables, plugs and sockets have been connected correctly, the VA hood
has been closed correctly and the adaptation to the process valve was done
correctly)
6.2. Conformity with the following standards
according to ec declaration of conformity (CE mark)
EMC Directive 2004/108/EC (previously: 89/336/EMC)
(only if cables, plugs and sockets have been connected correctly)
A Declaration of Conformity for the specific device can be requested from Bürkert.
atex directive 94/9/ec
Ignition protection type: Dust ATEX category 3D Ex tD A22 T135°C or
Ex tc IIIC T135°C
Gas ATEX category 3G Ex nA IIC T4 or
Ex nAc IIC T4
english
Control Head Type 8681