Endress+hauser Conducta Gmbh+co. Kg

Andreas Löbbert

Michael Hanko

Christian Fanselow

Erik Hennings

Alexander Hörig

Katrin Scholz

Jens Vettermann

Björn Haase

Stefan Pilz

Matthäus Speck

Stefan Wilke

Ronny Michael

Magdalena Losik-Strassberger

Thomas Höhne

An optochemical sensor for determining a measurement signal, which correlates with a concentration of an analyte of a measuring fluid, comprises: a sensor cap including a sensor spot, wherein the sensor spot contains at least one analyte-sensitive indicator dye and a state description indicator which reflects the aging state of the sensor spot; a radiation source to radiate excitation radiation onto the sensor spot and to excite a luminescence of the indicator dye; a radiation receiver to receive reception radiation emitted by the sensor spot; and a sensor circuit electrically connected to the radiation source and the radiation receiver and configured to control the radiation source and to generate, based on an intensity of luminescence and/or a phase angle of luminescence, a measurement signal representing the concentration of the analyte in the measuring fluid in contact with the sensor spot.

Optochemical sensor and method for measured value correction

An electrochemical half-cell includes an electrical terminal lead in contact with a solid electrolyte, wherein the solid electrolyte includes a doped high-entropy oxide. The electrochemical half-cell can be used as either a reference half-cell or a measuring half-cell. Methods of manufacturing the solid electrolyte and the electrochemical half-cell are further disclosed.

Electrochemical half-cell, electrochemical sensor, manufacturing method of solid electrolyte and electrochemical half-cell, and use of solid electrolyte in electrochemical half-cell

The present disclosure relates to an optochemical sensor element comprising: a substrate layer having a first substrate side facing toward a measurement medium and an opposite second substrate side; a functional layer, on the first substrate side and having a first reference dye, an indicator dye, and a second reference dye, wherein the first reference dye comprises an inorganic material, is insensitive to pH, and is suitable to emit a first luminescence signal upon stimulation, wherein the indicator dye comprises an organic material and is sensitive to pH, and is suitable to emit a third luminescence signal upon stimulation, wherein the second reference dye comprises an organic material, is insensitive to pH, and has a passivated functional group, and is suitable to emit a second luminescence signal upon stimulation, wherein the substrate layer is transparent to the stimulation signal and the luminescence signals.

Optical sensor element, optical pH sensor and method for monitoring the function of an optical pH sensor

The present disclosure relates to an optochemical sensor element, comprising: a substrate layer having a first substrate side facing toward a measuring medium and a second substrate side opposite the first substrate side; a functional layer arranged on the first substrate side and is subdivided into functional segments separate from one another, wherein a first functional segment has a second reference dye and a second functional segment has an indicator dye, wherein the second reference dye comprises an organic material and is insensitive to oxygen, and is suitable to emit a second luminescence signal upon stimulation with a first stimulation signal, wherein the indicator dye comprises an organic material and is sensitive to oxygen, and is suitable to emit a third luminescence signal upon stimulation with the first stimulation signal, wherein the substrate layer is transparent to the stimulation signal and to the second and third luminescence signals.

Optical sensor element, optical oxygen sensor, and method for monitoring the function of an optical oxygen sensor

The present disclosure relates to an electrochemical sensor for determining a measurand correlating with a concentration of an analyte in a measuring fluid, comprising: a sensor membrane designed to be in contact with the measuring fluid for detecting measured values of the measurand; a probe housing which has at least one immersion region designed for immersion into the measuring fluid, wherein the sensor membrane is arranged in the immersion region of the probe housing; and a measurement circuit which is at least partially contained in the probe housing and is designed to generate and output a measurement signal dependent on the measurand, wherein the sensor membrane contains an optically detectable substance for marking the sensor membrane.

Electrochemical sensor

The present disclosure relates to a method for manufacturing a sensor cap with at least one main body and a membrane for an optochemical or electrochemical sensor for determining and/or monitoring the concentration of an analyte in a measuring medium, a corresponding sensor cap, and a corresponding sensor. In one aspect of the present disclosure, a permeable membrane is provided with a surface for contacting the measuring medium, as well as a main body with at least one sector for connecting to the membrane. At least part of the membrane and main body are welded, wherein the membrane is at least partially applied to the at least one sector of the main body and a connection between the main body and membrane is sealed against the measuring medium.

Method for producing a sensor cap with a membrane

The present disclosure relates to an optical measurement probe for the detection of measurement values correlating with a measurand of a measuring medium, including a probe housing having at least one immersion region structured to be immersed in the measuring medium, a radiation source arranged in the probe housing, a radiation receiver arranged in the probe housing, and an indicator chamber formed in the probe housing and sealed via a membrane arranged in the immersion region of the probe housing, wherein an indicator is contained in the indicator chamber, the indicator including an AIE-active substance dissolved in an indicator solution or in an indicator gel, which AIE-active substance is a substance formed from species, molecules, complexes or clusters whose luminescence efficiency is increased via formation of aggregates containing the species.

Optical measurement probe

An optochemical sensor unit including: an optical waveguide; a transmitting unit for emitting a first transmission signal for exciting a luminophore; a receiving unit for receiving a received signal comprising a signal component emitted by the excited luminophore; a measuring chamber for receiving a fluid, wherein the fluid includes magnetic microspheres; a membrane arranged between the measuring chamber and a measuring medium for exchanging an analyte between the measuring medium and the fluid in the measuring chamber, wherein the measuring diaphragm is impermeable to the magnetic microspheres; and an electromagnet for attracting magnetic microspheres to a sensor membrane with a fluid-contacting surface and/or to a fluid-contacting surface of the optical waveguide, or to a surface of a transparent substrate layer of the optical sensor unit that is connected to the optical waveguide.

Optochemical sensor unit and a method for the qualitative and/or quantitative determination of an analyte in a measuring medium with the sensor unit

The present disclosure discloses an optochemical sensor for determining a measurand correlating with a concentration of an analyte in a measuring fluid, comprising: a housing having an immersion region configured for immersing in the measuring fluid; a removable cap having a sensor spot, the removable cap removably arranged at the immersion region of the housing, wherein the sensor spot is disposed on a circumferential face; a radiation source disposed in the housing for radiating excitation radiation into the removable cap, wherein a deflection module is disposed in the removable cap as to deflect excitation radiation radiated into the removable cap; a radiation receiver disposed in the housing for receiving received radiation emitted by the sensor spot; and a sensor circuit disposed in the housing and configured to control the radiation source, receive signals of the radiation receiver, and generate output signals based on the signals of the radiation receiver.

Optochemical sensor and method

The present disclosure relates to a measuring arrangement for measuring an ozone content in a measured medium, including: a first sensor surface and a second sensor surface; a first cover element adjacent the first sensor surface and including an ozone binder that binds ozone without releasing oxygen or any species further reacting to form oxygen; a second cover element adjacent the second sensor surface and including an ozone converter that reacts with ozone to form oxygen; a measuring sensor configured to generate a first measurement signal dependent on the oxygen concentration at the first sensor surface and a second measurement signal dependent on the oxygen concentration at the second sensor surface; and an electronic evaluation unit configured to determine the ozone content in the measured medium based on the first and the second measurement signals.

Measuring arrangement for determining an ozone content of a measured medium

A sensor membrane for an optical sensor, wherein the outer layer in contact with the medium and/or a layer adjacent thereto has a graft copolymer to form an omniphobic surface in contact with the medium, as well as a sensor cap and/or an optical sensor and a method for manufacturing the sensor membrane.

Sensor membrane, sensor cap and/or optical sensor and method for manufacturing a sensor membrane

A sensor system comprises a first mobile sensor unit and a stationary sensor unit. The first mobile sensor unit has a first sensor for acquiring a first measured value and a first wireless communication unit for receiving a calibration value and for transmitting the first measured value. The stationary sensor unit has a second sensor for acquiring a second measured value and a second wireless communication unit for transmitting the calibration value and for receiving the first measured value.

Sensor system for mobile acquisition of at least one measured value and measuring method for such a sensor system

The present application discloses a sensor for determining a measurand correlated with a concentration of at least one analyte belonging to the class of reactive oxygen species in a measuring fluid, the sensor including a sensor element having an indicator substance, wherein the indicator substance is oxidized into an oxidized form of the indicator substance by the at least one analyte, a means for generating a flow of current in the sensor element that causes a reduction of the oxidized form of the indicator substance and thereby regeneration of the indicator substance, an optical measuring sensor to detect measuring radiation influenced by the oxidized form of the indicator substance and to generate an electrical measuring signal using the influenced measuring radiation, and a sensor switch connected to the optical measuring sensor to receive the measuring signal and to ascertain a measured value of the measurand using the measuring signal.

Growing community of inventors

Waldheim, Germany

Andreas Löbbert