Level measuring device

A method for measuring a filling level (L0, L1, L2) with a filling level measuring device with a sensor housing and at least one detection unit, wherein

• the sensor housing is intended to be immersed in a medium, and
• the detection unit comprises at least one detection section by means of which a capacitance caused by the filling level (L0, L1, L2) of the medium that is at least partially in contact with the outside of the sensor housing, and the method comprising:
• alternately, cyclically, electrically coupling a reference capacitor of an electronic circuit to the at least one detection section,
• alternately, cyclically, electrically coupling each detection section with the reference capacitor during a detection operation by a measuring circuit,
• detecting a capacitance caused by the filling level of the medium that is at least partially in contact with the outside of the sensor housing (11),
• calculating measured values of the detection process for the detection section with stored values of a measurement and with measured values of a specific detection section, and
• outputting the calculated measured values as filling level values at an interface.

A level measuring device comprising at least one detection unit for detecting a filling level of a medium, an electronic circuit and a sensor housing for accommodating the at least one detection unit, wherein:

• the sensor housing is intended to be immersed in a medium,
• the detection unit comprises at least one detection section which is configured to detect a capacitance caused by the filling level (L0, L1, L2) of the medium that is at least partially in contact with the outside of the sensor housing, and
• an electronic circuit comprises a reference capacitor, which is alternately, cyclically connected to the at least one detection section,
• wherein:
• the at least one detection section is charged with opposite polarity to the reference capacitor, and
• when the respective detection section is connected to the reference capacitor, a voltage level is established, wherein the voltage level correlates with a filling level (L0, L1, L2) applied externally to the sensor housing and/or detection section.

A level measuring device comprising a sensor housing for accommodating at least one detection unit for detecting a filling level (L0, L1, L2), wherein

• the sensor housing is intended to be immersed in a medium,
• the detection unit comprises at least one detection section, each configured to detect a capacitance caused by the filling level (L0, L1, L2) of the medium that is at least partially in contact with the outside of the sensor housing, and
• an electronic circuit comprises a reference capacitor, which is alternately, cyclically, electrically coupled to the at least one detection section wherein:
• the at least one detection section is charged with opposite polarity to the reference capacitor, and
• a voltage level is established when the detection section is connected to the reference capacitor,
• wherein the voltage level is processed to a filling level signal, and
• the filling level signal is outputted output.

A method for measuring a filling level (L0, L1, L2) comprising a filling level measuring device with a sensor housing and at least one detection unit, wherein

• the sensor housing is intended to be immersed in a medium,
• the detection unit comprises at least one detection section, configured to detect a capacitance caused by the filling level (L0, L1, L2) of the medium that is at least partially in contact with the outside of the sensor housing, and
• a reference capacitor of an electronic circuit is alternately, cyclically, electrically coupled to the at least one detection section,
• the method comprising:
• alternately, electrically coupling, during a detection process by a measuring circuit, the at least one detection section to the reference capacitor, and
• detecting a voltage level when the detection section is connected to the reference capacitor and correlates the detected voltage level with a filling level (L0, L1, L2) applied externally to the sensor housing and/or detection section.

A method for measuring a filling level (L0, L1, L2) comprising

• a filling level measuring device with a sensor housing and at least one detection unit, wherein:
• the sensor housing is intended to be immersed in a medium,
• the detection unit comprises at least one detection section configured to detect a capacitance caused by the filling level (L0, L1, L2) of the medium that is at least partially in contact with the outside of the sensor housing, and
• a reference capacitor of an electronic circuit is alternately, cyclically, electrically coupled to the at least one detection section,
• the method comprising:
• alternately, electrically coupling, during a detection operation by a measuring circuit, the at least one detection section is to the reference capacitor
• detecting at least one specific environmental variable by means of at least one specific detection section arranged at a lower end of the detection unit,
• calculating measured values of the detection process at least with measured values of the specific detection section, and
• outputting the calculated measured values as filling level values.