112
FLOWSIC600 · Technical Information · 8010125 V 4.0 · © SICK AG
Installation
Su
bj
ec
t t
o c
han
ge
w
ith
ou
t n
ot
ic
e
Operating conditions for the ultrasonic transducers
The FLOWSIC600 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,
e.g -40°C to +60°C.
Once the FLOWSIC600 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.
Figure 53
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
Case 3:
●
The area inside the pipeline is
dlassified as hazardous area
Zone 0.
●
Gas pressure must be in the
range from 80 kPa to 110 kPa
(normal atmospheric condition)
●
Gas temperature must in the
range from -20°C to 60°C.
Zone 1 or 2
Zone 1 or 2
Zone 1 or 2
Zone 0
Zone 1 or 2