Installation
FLOWSIC30 · Operating Instructions · 8020999/173B/V1-4/2020-02 · © SICK Engineering GmbH
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The connections of the ultrasonic transducers are intrinsically safe and are safely
separated from one another and from other non-intrinsically safe circuits. The transducers
may be connected and disconnected during operation as long as the safe separation of
circuits has been preserved in every respect. In order to ensure this, the respective
transducer connection cable should be disconnected at both ends (disconnect the
electronics side first, and then if necessary, the transducer side unless the MCX connector
is suitably fixed to prevent any uncontrolled movement). Operation using sensors or cables
not part of the original delivery or with sensors/components from other manufacturers is
not permitted.
Notes for safe operation in hazardous areas
● The ambient temperature range is between -25°C and +60°C.
● The type of protection for the field connections and power supply connection is deter
-
mined by the external circuits that are connected (for options see “Connection options”
above).
● If terminals are assigned with intrinsically safe circuits, it is recommended that the
metal cable glands are replaced with the light-blue plastic ones.
● Safety-relevant data for intrinsically safe circuits is provided in the table below,
respectively in the EC Type Examination Certificate and the IEC Certificate of
Conformity.
● If the meter body is thermally insulated, the insulation thickness must not exceed
50 mm. The SPU housing must not be insulated.
● The standard paint of the FLOWSIC30 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.
WARNING:
Ignition hazard through electrostatic discharges
Ignition hazards through electrostatic discharges exist when gas 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:
