AFS Series
Air Pressure Sensing Switches

Model AFS-398-112 Air Pressure Sensing Switch is a general purpose proving switch designed for HVAC and Energy Management applications. It can be used to sense positive, negative, or differential air pressure. The AFS-398-112 is equipped with convenient barbed sample line connectors that accept flexible tubing.

The plated housing contains a diaphragm, a calibration spring and a snap-acting SPDT switch.The barbed sample line connections located on each side of the diaphragm accept flexible tubing.

An enclosure cover guards against accidental contact with the live switch terminal screws and the set point adjusting screw. The enclosure cover accepts a 1⁄2″ conduit connection.



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