Installation
FLOWSIC600 · Technical Information · 8010125 V 4.0 · © SICK AG 117
Subject to change without notice
Notes for safe operation in hazardous areas
● Explosion protection: II 1/2G Ex de ib [ia] IIC T4 or II 2G Ex de ib [ia] IIA T4
● Ambient temperature range is from -40°C to +60°C.
● If terminals are assigned with intrinsically safe circuits, it is recommended that the
metal cable glands be replaced with the light-blue plastic ones
● The type of protection for the field connections and power supply connection is
determined by the external circuits that are connected (for options see "Connection
options" above).
● Safety-relevant data for intrinsically safe circuits is provided in the EC Type Examination
Certificate and the IEC Certificate of Conformity.
● Ensure that the cover on the power supply connection is properly sealed. In intrinsically
safe installations, the terminal box can be opened and cables connected and
disconnected while the system is live. In this case the safe separation of the circuits
from each other must be observed.
● If the meter body is insulated, the insulation thickness must not exceed 100 mm. The
SPU housing must not be insulated.
● The standard paint of the FL600 meter body consists of a double layer: Epoxy and
Acrylic RAL9002. This combination is the ideal protection of the meter body against
corrosion. The layer thickness is less than 0.2 mm.
WARNING:
Always observe the temperature specifications for use in hazardous areas.
Approval of the ultrasonic transducers in zone 0 is only valid for operation
under atmospheric conditions.
WARNING: Explosion Hazard
The ultrasonic probes are preferably made from titanium.
Should zone 0 or zone 1 have been defined in the pipeline, operation is
allowed only when ignition hazards caused by impact or friction can be
excluded.
WARNING: Ignition hazard through electrostatic discharges
Ignition hazards through electrostatic discharges exist when gas flow meters
with special paint and a layer thickness >0.2 mm are used in applications with
ignition group IIC in accordance with ATEX and IECEx.
For installation, the risk of electrostatic charging of the surface must be
reduced to a minimum.
Use appropriate caution when performing maintenance and cleaning work.
For example, the surfaces should only be cleaned with a damp cloth.
A warning sign fitted at the factory identifies this type of device:
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