FUNCTION
Air or non-aggressive gas flow control. Alarm signal for flow shortage.
APPLICATIONS
Well-suited in air ducts, air conditioning and air handling systems.
WIRING DIAGRAM
Connect to red and to white terminals (fig. 1). The contact red-
white opens when the flow drops below the set level. When
the flow is missing the contact red-blue closes and can be used
as a signal or alarm contact.
INSTALLATION
The flow switch may be installed in any position, as long as it is
following the stream. On vertical pipes, balance the device for
compensating the weight of the vane. Fit the provided gasket
between device and pipe.
Note: The flow switch is factory calibrated to the minimum switch-
off value. A higher value can be selected by turning the adjustment
screw to the right. Due to the risk of fracture at higher air speed
than 5 m/s, the vane must be cut off on the side where marked.
As a result of this, however, the factory-set minimum switch-off
value will increase from 1 m/s to 2.5 m/s. In order to avoid air
turbulences that diminish stability of the vane, steadying zones
should be provided for a length of 5 times the diameter before and
after the location of installation.