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Tips for Choosing a Proximity Sensor

Proximity sensors are devices that can detect nearby objects by electromagnetism. Proximity sensors are used in a broad range of industrial and manufacturing applications. This article will help you to know how to select proximity sensors, especially when you have no clue what you should buy.

There are numerous types of proximity sensors, such as inductive, capacitive, magnetic inductive proximity sensors, and they can also be further categorized as DC or AC proximity sensors depending on the current type applied. Before buying, you should inquire from a retailer or a knowledgeable person how these sensors differ from each other. You should also ask for the pros and cons of each available sensor. Once you know the various types know we look at the factors to consider when purchasing a proximity sensor. The first and most vital thing to consider would be the object that is supposed to be detected. Generally, inductive proximity sensors should be prioritized if the detection object is metallic. If the detection objects nonmetallic, you should choose a capacitive proximity sensor, and in case you are dealing with a magnetic object, then naturally, you should choose a magnetic induction proximity sensor. Be sure to check it out!

Next, you should know the detection range that is needed. MAGNASPHERE Proximity sensors vary in their detection ranges or simple terms, the sensing distance. The sensing distance is listed on the specification table and selection for the various sensor categories. It is also important to consider the space that is available for mounting. There are round and rectangular shaped sensors available. Mostly, the cylindrical/circular shape is used. The one you select should be able to fit in properly when you are mounting it. You should also consider whether you want a shielded or an unshielded sensor. Each of these has its pros for instance unshielded sensors sense for longer distances while unshielded sensors allow flush mounting. What you choose between the two should depend on which feature influenced by whether the sensor is shielded or not you choose to prioritize.

You will also need to consider what the sensor output is connected to. AC sensors are not affected by this factor, but for a DC sensor, you will have to consider this factor. It is important to note that if you are connecting it to a solid-state relay, you need a PNP output, but most PLC products will accept almost all output. It is also essential to know the kind of switching frequency you need. Switching frequency determines the speed of response for the sensor per minute. This frequency is higher for DC than for AC sensors. You should also consider factors such as supply voltage for the proximity sensor. AC uses more voltage supply than DC. There are more factors to put into consideration, but the ones listed in this article should help you make a right choice. Know more about sensors at

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