External/Panel Mounting Illustration - Pepperl+Fuchs 7500 User Manual

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2.3.9

External/Panel Mounting Illustration

High-pressure port (+): For monitoring the enclosure pressure. This port must always connect the
control unit to the monitored enclosure protected by pressurization
Low-pressure port (-): The atmospheric reference. This port shall always be connected such that
the air pressure present on this port is the atmospheric pressure surrounding the enclosure being
protected by pressurization.
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