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FAFNIR GmbH
Schnackenburgallee 149 c
22525 Hamburg
Tel.: +49 / (0)40 / 39 82 07-0
www.fafnir.de
When used in potentially dust explosive atmospheres, the maximum ambient temperatures depending
on the maximum surface temperature and the dust layer can be found in the table 6.
Category 1D or equipment protection level Da (filling level sensor completely installed in Zone 20)
Maximum surface temperature
Ambient temperature T
a
Dust layer ≤ 5 mm
immersed in dust
Types TORRIX Ex SC… / VISY-Stick …
T
a
+ 30 °C
135 °C
-40 °C … +85 °C
Types VISY-Stick … TLS
T
a
+ 110 °C
135 °C
-40 °C … +77 °C
T
a
+ 110 °C
Observe EN 60079-14
*
-40 °C … +85 °C
Types TORRIX Ex C… / TORRIX Ex RS485… / TORRIX Ex TAG… / VISY-Stick … RS485
T
a
+ 55 °C
Observe EN 60079-14*
-40 °C … +85 °C
Types TORRIX Ex …
T
a
+ 75 °C
Observe EN 60079-14*
-40 °C … +85 °C
Table 6: Operating temperatures for dust explosive atmospheres
The filling level sensors achieve a housing protection of:
Degree of protection:
IP68
VI
Specific conditions for use
1.
When using Titanium floats or Sump Environmental Sensors, the risk of ignition due to impact or
friction shall be avoided.
2.
When using plastic parts, pay attention to electrostatics.
*
For the assessment of the temperatures see section 5.6.3.3 of EN 60079-14:2014
