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The air proximity sensor is a non-contact, no-moving-part sensor, capable of detecting the presence of an object at ranges up to 1/8'. In the absence of an object, air flows freely from the sensor resulting in a near zero output signal. The presence of an object within the sensing range deflects the normal air flow and results in a positive output signal.
The magnetic sensing valve detects the presence of a magnet or steel part in its near vicinity. The 3-way normally closed air valve is actuated when in the presence of a small magnet or steel part. The valve deactuates when the small magnet or steel part is removed.