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FLOWSIC100 Flare-XT · Operating Instructions · 8023761/V1-0/2020-10 · © SICK Engineering GmbH
Installation FLSE100-XT
Application limitations for use in Ex zone 1
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Ultrasonic probes made of titanium may be used in Zone 1 only when risks of ignition
arising from impacts or friction on the sensor enclosure can be ruled out.
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When ultrasonic probes are installed in pipelines with a defined hazardous area, solid
parts, e.g. dust or other particles may not cause an ignition hazard.
Application limitations for use in hazardous area classification Ex zone 0 in the pipeline
Use in applications of Zone 0 is generally only possible for device types F1F-S, F1F-M and
F1F-P under consideration of the application limitations described in these Operating
Instructions.
● Ultrasonic probes can also be operated in Zone 0 under atmospheric
conditions (ambient temperature -40°C to +70°C and ambient pressure
0.8 bar to 1.1 bar absolute). The devices must be labeled at least with the
information Ex ia.
● Ultrasonic probes made of titanium may be used in Zone 0 only when no
rigid components transported through the medium (e.g. dust and other
particles) are present and the ultrasonic probes are fitted in Zone 0 in a
way (e.g. inside a pipeline) that risks of ignition arising from impacts or
friction can be ruled out. The intrinsically safe ultrasonic transducers with
their gas-tight and pressure-proof enclosures must be installed gas-tight
and pressure-tight in the zone-separating wall to Zone 0. The wall must be
thicker than 3 mm. The requirements in EN 60079-26 Section 4.6 must be
adhered to.
