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FLOWSIC30 · Operating Instructions · 8020999/173B/V1-4/2020-02 · © SICK Engineering GmbH
Installation
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Operating conditions for the ultrasonic transducers
The FLOWSIC30 is designed for use in hazardous areas with potentially explosive
atmospheres only under normal atmospheric conditions. The atmospheric conditions must
be within the following ranges:
– Ambient pressure range 80 kPa (0.8 bar) to 110 kPa (1.1 bar)
– Air with normal oxygen content, typically 21% v/v
The ambient temperature must be within the range specified at the SPU type plate.
Once the FLOWSIC30 is installed in the pipeline, the meter body becomes a part of the
pipeline. The wall of the pipeline and the meter body is then deemed a zone-separating
barrier. The figure below helps in understanding the different situations for a possible
application and shows what operating conditions apply.
Fig. 21
Ex-Zones
Non-Ex zone
Case 1:
● The pipeline contains a non-explosive
mixture. The gas mixture may be
combustible.
● Gas pressure and gas temperature
may be within the range specified by
the tag on the meter body.
Case 2:
● The area inside the pipeline is
classified as hazardous area Zone 1
or 2.
● Gas pressure must be in the range
from 80 kPa to 110 kPa (normal
atmospheric condition)
● Gas temperature must be within the
permitted ambient temperature
range specified by the type plate on
the SPU
Zone 1 or 2
Zone 1 or 2
Zone 1 or 2
NOTICE:
The rise in the ambient temperature outside the pipeline due to a hot pipeline
must be taken into account.
The user must ensure that the ambient temperature around the electronics
housing does not exceed the maximum permitted ambient temperature
marked on the type plate of the FLOWSIC30
