
Installation
FLOWSIC600 · Technical Information · 8010125 V 4.0 · © SICK AG
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Additional requirements for operation of ultrasonic transducer in Zone 0 classified
areas
The FLOWSIC600 is marked with a minimum rating of II 1/2 G Ex [ia] or Gb/Ga Ex [ia Ga].
Operation of ultrasonic sensors in Zone 0
The ultrasonic transducers are suitable for operation in Zone 0 at atmospheric conditions,
i.e. ambient temperature -20 °C to 60 °C and ambient pressure 0.8 bar to 1.1 bar(a). If
ultrasonic transducers with titanium housing are to be used in Zone 0, it must be assured
that the medium does not transport solid parts (like dust or other particles) which could
cause an ignition hazard. Otherwise, transducers made from stainless steel must be used.
After installation and following every de-installation and reinstallation of the ultrasonic
transducers, the seal effect must be appropriately checked. During operation, the leak-
tightness must be periodically checked and the seals replaced if necessary. After de-
installation and before every reinstallation the seals must be replaced according to the
original assembly. Seals can be ordered from SICK (part number and serial number from
type plate at SPU).
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 FLOWSIC600.