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App note: Measuring liquid levels using hall effect sensors

Posted on Sunday, July 1st, 2018 in app notes by DP

an_infineon_liquid_lvl_measurement

App note from Infineon on methods used in liquid level measurement and how contactless hall effect sensors are the right choice for the job. Link here (PDF)

This application note is dedicated to liquid level sensing using non-contacting magnetic sensor technology. First, an overview of some liquid level sensor application requirements are given. Next, we will introduce some of the solutions that are employed today and are researched for future systems, including both contacting techniques as well as non-contacting methods. Magnetic sensing turns out to be a comparably easy and robust solution to tackle the problem and Infineon’s linear Hall sensor portfolio is presented. Different design aspects of a magnetic liquid level sensor, including magnetic circuit designs, are discussed. The last section introduces some of Infineon’s Hall effect sensors that are suitable for use in fuel level sensing.

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