2
Remarks for safe use in hazardous areas
Functions and features
This sensor is used for temperature measurement and is intended for industrial plants.
The technical data on the type label must be absolutely adhered to. The documentation
must be observed. For applications in which the failure of the sensor may lead to a risk for
persons corresponding safety measures must be provided.
• Use in hazardous areas according to the classification
II 3D
(group II, category 3D, apparatus for dust atmosphere).
• The requirements of the standards EN 60079-0 and EN 60079-31 are met.
• Marking
II 3D Ex tc IIIC T135°C Dc X IP67
• Use in hazardous areas according to the classification
II 3G
(group II, category 3G, apparatus for gas atmosphere).
• The requirements of the standards EN 60079-0 and EN 60079-15 are met.
• Marking
II 3G Ex nA IIC T4 Gc X
• Permissible operating temperature of the application (proper usage):
-20 °C...+115 °C
Installation / Set-up
The units / sensors must only be installed, connected and set up by qualified staff. The
qualified staff must have knowledge of protection classes, regulations and provisions for
apparatus in hazardous areas.
Check whether the classification (see "Marking" above and marking on the unit) is suitable
for the application.
There must be no explosive atmosphere present during any task such as transport, storage,
mounting, electrical connection, commissioning, maintenance or repair.
Installation remarks / Installation
The temperature sensors must be tightly, firmly and safely connected to the measuring
application according to the current state of technology.
• Adhere to the respective national regulations and provisions as well as the relevant instal-
lation regulations.
• The sensor must be firmly and safely connected to its evaluation electronics to ensure a
permanent electrical connection.
• The cable must be effectively protected against damage. Abrasion or sharp-edged objects
might damage the cable. This can lead to failure of the unit or make ATEX-conform operati-
on impossible.
• The cable is intended for fixed laying. Minimum bending radius: 15 x cable diameter.
