Endress+hauser Conducta Gmbh+co. Kg

Other

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

Hermann Günther

Ronny Michael

Michael Hanko

Thomas Nagel

Sven-Matthias Scheibe

Stefan Paul

Hendrik Zeun

Jinshan Huo

Robert Tzschoppe

A circuit for an inductive conductivity sensor comprises: a secondary coil having a first coil terminal and a second coil terminal, a switch having a first switch terminal, a second switch terminal, a third switch terminal, a first potential terminal, and a control unit having a first control terminal and a second control terminal, wherein the first coil terminal is connected to the first control terminal and the second coil terminal is connected to the first switch terminal, wherein the second switch terminal is connected to the first potential terminal and the third switch terminal is connected to the second control terminal.

Inductive conductivity sensor circuit, inductive conductivity sensor and method of operating the circuit

According to at least one aspect of the present disclosure, a method includes applying an alternating current having a frequency at a selected voltage to a sensor, wherein the voltage is applied between a reference electrode and a working electrode of the sensor, varying the frequency of the alternating current between a lower frequency and an upper frequency, measuring an impedance of the sensor between the reference electrode and the working electrode as a function of the frequency of the alternating current, analyzing the measured impedance to determine a total impedance of the sensor and the real and imaginary components of the total impedance at each applied frequency of the alternating current, and characterizing the sensor based on the total impedance at the low frequency end of the sensor and on the real and imaginary components of the total impedances.

Characterization and failure analysis of a sensor using impedance frequency response spectra

The present disclosure includes a method for correcting a primary measurement signal detected by an optical detector. The method includes: emitting a first light signal from a light source to an active sensor layer such that the active sensor layer is stimulated and emits a second light signal, which is detected by an optical detector; determining the primary measurement signal of a primary measurement parameter based on the second light signal and/or the first light signal; determining a secondary measurement signal of a secondary measurement parameter that is different from the primary measurement parameter based on the first light signal or the second light signal; comparing the determined secondary measurement signal with a first limit value; and correcting the primary measurement signal when the secondary measurement signal exceeds the first limit value, wherein correcting the primary measurement signal comprises smoothing the primary measurement signal by filtering.

Method for correcting a primary measurement signal detected by an optical sensor

A measuring system for determining a value of a physical or chemical, measured variable of a medium, includes: a base unit; at least one relay unit connected with the base unit and a sensor unit connected with the relay unit. The sensor unit includes a circuit having at least one microcontroller, at least a first memory region, and a second memory region. The upload software is embodied, in interaction with the microcontroller, to perform an updating of the basic software with at least one software module provided from the base unit. The relay unit includes a circuit having at least one microcontroller, and at least a first memory region, in which a basic software of the relay unit is stored. The circuit of the relay unit further includes a second memory region, in which an upload software of the relay unit is stored.

Measuring system for determining a value of a physical or chemical, measured variable of a medium and method for operation of the measuring system

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Dresden, Germany

Hermann Günther