Tag Archives: capacitive sensors

Sensing Types of 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

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What is a Capacitive Sensor?

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

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Level Sensing in Machine Tools

Certainly the main focus in machine tools is on metal cutting or metal forming processes. To achieve optimum results in cutting processes coolants and lubricants are applied. In both metal cutting and metal forming processes hydraulic equipment is used (as hydraulics create high forces in compact designs). … Continue reading

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Multiple Sensing Modes for Miniature Capacitive Sensors

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

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Miniature Capacitive Sensors for Small Part Detection

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

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The Often Overlooked Proximity Sensor

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

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Direct vs Indirect Mounting of Capacitive Sensors

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

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Capacitive Sensors – Part II

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

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Capacitive Sensors – Part I

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

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