{"id":52583,"date":"2019-01-22T12:47:53","date_gmt":"2019-01-22T11:47:53","guid":{"rendered":"https:\/\/wpml.rechner-sensors.com\/capacitive-filling-level-measurement"},"modified":"2019-01-22T12:47:53","modified_gmt":"2019-01-22T11:47:53","slug":"capacitive-filling-level-measurement","status":"publish","type":"page","link":"https:\/\/stage.rechner-sensors.com\/en\/documentations\/knowledge\/capacitive-filling-level-measurement","title":{"rendered":"Capacitive filling level measurement"},"content":{"rendered":"
[vc_row el_class=”no_padding_row”][vc_column][vc_single_image image=”43198″ img_size=”full”][\/vc_column][\/vc_row][vc_row el_class=”contact_row”][vc_column width=”2\/3″][vc_column_text]\n

Capacitive filling level measurement \u2013 this is what you need to know!<\/h1>\n[\/vc_column_text][\/vc_column][vc_column width=”1\/3″][vc_btn title=”To our capacitive filling level measurement” link=”url:https%3A%2F%2Fwww.rechner-sensors.com%2Fen%2Fproduct-category%2Fcapacitive-level-measurement-systems|||”][\/vc_column][\/vc_row][vc_row el_class=”no_padding_row”][vc_column][vc_column_text]In the industrial sector, the use of process chains makes it necessary to subject liquids and other media to continuous filling level measurement. Different physical procedures are available for this purpose. One of these is so-called capacitive filling level measurement, whose functionality and process are explained in the following technical contribution.[\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=”content_anker”][vc_column][vc_column_text]\n

Table of contents<\/strong><\/p>\n

What is capacitive filling level measurement?<\/a><\/p>\n

Capacitive filling level measurement \u2013 functionality and application<\/a><\/p>\n

Conductive and non-conductive materials<\/a><\/p>\n

Measuring procedures<\/a><\/p>\n

What materials can be detected by capacitive filling level measurement?<\/a><\/p>\n

In what areas is capacitive filling level measurement used?<\/a><\/p>\n

Capacitive filling level measurement \u2013 what are the advantages and disadvantages?<\/a>[\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=”no_padding_row” el_id=”What_is_capacitive_filling_level_measurement”][vc_column][vc_column_text]\n

What is capacitive filling level measurement?<\/h2>\n

Filling level measurement represents a collection of different physical processes that can be used to determine the filling level of liquids, pasts or bulk goods in containers using measuring devices. So-called capacitive filling level measurement determines the filling level of a container using an electrical field whose volume-dependent change in capacity is registered using measuring equipment. These measurements need to be accurate and reliable. If the measurement values are faulty, industrial processes can come to a standstill.[\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=”no_padding_row” el_id=”Capacitive_filling_level_measurement__functionality_and_application”][vc_column][vc_column_text]\n

Capacitive filling level measurement \u2013 functionality and application<\/h2>\n

Capacitive filling level measurement uses a so-called capacitive sensor that functions like an open capacitor and is inserted into the material to be measured as a probe. An electrical field is generated between the measuring electrode installed in the sensor tip and the GND electrode, which together form the plates of the capacitor. The field reacts as follows to carry out a measurement: If a medium with an electrical conductivity higher than air (measured using the so-called dielectric number) enters the measuring field, the capacity of the field will increase depending on the permittivity of the material (relative conductivity depending on material, indicated as “Epsilon r” factor). The measuring electrode registers this change in capacity, the generated signal is evaluated in real-time and, given a suitable strength, will lead to a measuring result in the form of a switch contact in the electrode output relay. There are different variations of capacitive sensors that use divergent methods and are suitable for different materials. Proximity switches, pressure sensors, distance sensors and acceleration sensors are in common use.[\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=”no_padding_row” el_id=”Conductive_and_non_conductive_material”][vc_column][vc_column_text]\n

Conductive and non-conductive materials<\/h2>\n

With regard to the decision of the filling level measurement procedure to be used in a particular case, the differentiation between electrically conductive and non-conductive materials is very significant.<\/p>\n

Conductive media or materials include:<\/p>\n