Air Proximity Sensors

Available from O'Keefe Controls Co.

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.

At low supply pressure, flow from the sensor exerts only minute force on the object being sensed and is consequently appropriate for use where the object is lightweight, or easily marred by mechanical sensors. Since there are no moving mechanical parts in the air proximity sensor, there are no inherent wear mechanisms or life limitations.

In this regard, the sensor is not cycle dependent and is particularly appropriate for applications requiring large numbers of cycles. Also, the air proximity sensor is inherently explosion-proof and self-purging. Consequently, it is suitable for many adverse environments.

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