Endress+hauser Conducta Gesellschaft Fur Mess- Und Regeltechnik Mbh+co. Kg

Endress+hauser Conducta Gmbh+co. Kg

Carsten Gotz

Matthias Grossmann

A method for determining a turbidity of a medium in a container using at least one turbidity sensor. Depending on the ambient conditions at the installation location of the turbidity sensor, comprising the following steps: passing transmitted radiation through the medium, wherein the transmitted radiation is converted by interaction with the medium, as a function of the turbidity in the received radiation; receiving the received radiation; converting the received radiation into a scattered light intensity, and determining the turbidity from the scattered light intensity. The method is characterized by the following steps: detecting the chronological sequence of the scattered light intensity; determining a mean value on the basis of the chronological sequence of the scattered light intensity; determining the turbidity from the mean value using a calibration model by assigning a turbidity to each mean value; determining a corrected mean value on the basis of the chronological sequence of the scattered light intensity, by determining a noise parameter from the scattered light intensity, and by determining the corrected mean value from the noise parameter using a noise model, and determining a corrected turbidity at least from the corrected mean value using the calibration model by assigning a corrected turbidity to each corrected mean value. The invention further relates to a turbidity sensor for implementing the method.

Method for determining a turbidity and turbidity sensor for implementing the method

A turbidity sensor and a method for determining at least one physical, chemical and/or biological measured variable of process automation in a medium by means of at least one optical sensor, comprising the steps of sending transmission signals into the medium, wherein the transmission signals are converted into received signals by interaction with, especially by scattering from, the medium as a function of the measured variable; receiving the received signals; and converting the received signals into the measured variable as a function of environmental conditions at the location of installation and, adjusting the sensor based on a calibration graph corresponding to environmental conditions at the location of installation.

Method for determining at least one physical, chemical and/or biological measured variable by means of optical sensors, and turbidity sensor

A contacting system, comprising: an essentially cylindrical contact body having at least a first opening, a second opening and a contact body interior between the first opening and the second opening. The first opening is embodied for accommodating the cable, wherein a holding element is provided in the contact body interior and is so embodied that it produces contact between the first conductor and the contact body. A sealing element is provided at the first opening and is so embodied that it seals off the contact body interior from the medium.

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Ettenheim, Germany

Carsten Gotz