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Tag Archives: capacitive sensors
Similar to inductive sensors, capacitive sensors are available in two basic versions. The first type is the flush or shielded or embeddable version however with capacitive sensors they are sometimes referred to as object detection sensors. The second type is … Continue reading
Capacitive proximity sensors are non-contact devices that can detect the presence or absence of virtually any object regardless of material. They utilize the electrical property of capacitance and the change of capacitance based on a change in the electrical field … Continue reading
In a previous blog post we discussed miniature capacitive sensors and their use for precision and small-part sensing. Here we will discuss the different sensing modes available with separately amplified miniature capacitive sensors. Standard Switching Mode This is the most … Continue reading
As discussed in a previous blog post, miniature sensors are an ongoing trend in the market as manufacturing and equipment requirements continue to demand smaller sensor size due to either space limitations and/or weight considerations. However, size and weight aren’t … Continue reading
If someone says proximity sensor, what is the first thing that comes to mind? My guess is inductive and justly so because they are the most used sensor in automation today. There are other sensing technologies that use the term … Continue reading
In liquid level sensing applications, capacitive sensors can be mounted directly in contact with the medium or indirectly with no contact to the medium. Containers made of metal or very thick non-metallic tank walls (more than 1″) typically require mounting … Continue reading
In my previous post we saw the myriad of different applications capacitive technology is involved in. We will discuss today the underlying physical principles of these sensors. Continue reading
In this new series I would like to write about different aspects of capacitive sensors in today’s factory automation world. Capacitive sensors found their place in certain industries and applications as effective problem solvers for specific tasks such as plastic pellet detection devices in injection molding machines and liquid level monitors in the semiconductor industry. Continue reading