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Flow speed or flow rate monitoring of liquid
and gaseous media plays an important role
in the field of factory and process automation.
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Subsequently it is important to know if: A self contained
device with integrated processing electronics is required
(advantage: local signal processing and display in one
device) or a remote sensor combined with a signal
processing unit (advantage: small housing style, ideal for
mounting in confined spaces)

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Only Ex-remote sensors with separay connected signal
processing unit can be mounted in explosion hazardeous
areas. It is thus important to know the class of Ex-zone
where the sensor has to be applied because sensor ver
sions for liquid and gaseous media are also available for
explosion hazardous areas.