How far away should my magnet be in order to operate a magnetic proximity sensor?
There’s no easy answer to this question because it depends on your magnet. In general, we can tell you that nearly every user of magnetic proximity sensors employs an airgap of less than 1 inch. The majority uses an airgap of less than ½ inch, and an airgap of ¼ inch is typical. Having said that, you really need to evaluate the magnet and the sensor in order to assess the appropriate airgap for your application. Phoenix America Inc. engineers can help you model your magnetic circuit and can even help you select and/or design a magnet, so if you need help, please give us a call.
