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News from EBE sensors + motion

Capacitive Level Sensor with Inductive Parameter Tracking

Leinfelden-Echterdingen, 15.07.2020

Due to varying gap dimensions level measuring at removable tanks is often challenging. EBE sensors + motion has developed an elegant solution to offset the manufacturing and mounting tolerances of the plastic parts used.

The company EBE sensors + motion offers a new sensor technology optimized especially for issues with plastic removable tanks. The manufacturing of plastic tanks and unit frames entails manufacturing tolerances that result in varying gap dimensions between tank wall and unit frame. Varying wall thicknesses, thermal deformation of the plastic parts over their lifetime or tanks not properly inserted can significantly influence the measuring distances. If the variations exceed two millimetres the level measurement by conventional capacitive sensors often presents a problem.

This effect is compensated by the new combi sensor from EBE. The capacitive level sensor with electrode structure and µ-controller is also equipped with an inductive proximity sensor. The filling level is measured from outside through the tank wall, the tank cavity and the unit frame. By means of the proximity sensor the actual distance between the sensor surface and the tank surface is measured. A small piece of aluminium is totally suffices as counterpart for the induTEC®-sensor. Based on the individual air gap the parameters for the capacitive sensor are thus tracked in real time.     The sensors are available both as filling level or limit value switch or as continuously measuring sensor.

Within the framework of the customer-specific sensor development the individual parameter sets are determined once and stored in the flash memory of the sensor. In this way, a calibration of the combi sensor by the customer or user is not required. An elegant solution with no additional electronic effort! The coil structure required for the proximity sensor is integrated on the PCB of the capaTEC®-sensor. The existing µ-controller simply takes over the electronic evaluation and calculation.

The shape and surface of the combi sensor can be individually adapted to the conditions and requirements of the individual application resp. the tank. From a sensor surface of 25x30mm material thicknesses and air gaps in total of seven millimeter or more can be bridged without any problems. Coatings and contaminations of the tank do not matter at all. The parasitic effects resulting from the coatings are compensated by the capaTEC®-algorithms.

The combi sensors are ideally suited for use with removable tanks n white goods, in the process industry, in mobile cleaning devices and in the sanitary and camping sector.

 

Press Photo

Combi sensor with automatic air gap compensation for the touchless level

Combi sensor with automatic air gap compensation for the touchless level measurement of non-conductive tanks:

Picture source: EBE Elektro-Bau-Elemente GmbH

Publication of photos is licence-free and free of charge. Source information requested.

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Press release: Capacitive Level Sensor with Inductive Parameter Tracking

Short Company Profile

The company EBE Elektro-Bau-Elemente GmbH (brand name EBE sensors + motion) based in Leinfelden-Echterdingen offers OEM-solutions in the fields of sensor and actuating technology, mechatronics, drive technology and magnetic engineering. EBE develops customized solutions and manufactures serial products for OEM customers. The focus lies on capacitive and inductive sensors, among others for level monitoring based on sensor technologies developed in-house as well as mechatronic systems. A further focus lies on intelligent door opening modules for appliances or sensor systems for white goods, medical engineering and mobility. The sensor program also includes level sensors, pressure sensors, position sensors and capacitive switches. Furthermore, EBE manufactures solenoids for a variety of applications as well as robust rotary switches, buttons and encoders and adapts them to the customer requirements. The company sees itself as a competence center for the development and production of sensor systems and drive technology.

Contact

EBE Elektro-Bau-Elemente GmbH
External press officer, Doris Tischer
Sielminger Str. 63, 70771 Leinfelden-Echterdingen, Germany
Tel. +49 711 79986-0, E-Mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

 

Find out here about the sensor technologies for capacitive and inductive sensors developed by EBE sensors + motion. Click here for mechatronics solutions for appliances, industry, medical engineering and vehicles. Find out about the range of electromechanical solenoids, rotary switches, buttons and encoders. As an OEM-partner EBE also develops and produces level sensors, pressure sensors, position sensors, strain sensors and intelligent door opening modules.

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EBE · Elektro Bau Elemente GmbH
Sielminger Straße 63
70771 Leinfelden-Echterdingen

Telephone +49 (0) 7 11- 7 99 86-0
Telefax +49 (0) 7 11- 7 99 86-250

E-Mail: info@ebe.de