Abstract: The present disclosure relates to a protective device for a sensor unit of an optochemical sensor for determining or monitoring at least one analyte present in a medium, including at least one protective substance for protecting the sensor unit against a physical and/or chemical alteration caused by at least one substance contained in the medium, and an at least partially media-permeable functional layer, where the protective device, in a region facing towards the medium, can be attached to the sensor unit or applied to the sensor unit. The present disclosure further relates to an optochemical sensor having a protective device according to the present disclosure.

Abstract: The present disclosure relates to a sensor for determining measured values of a measured variable representing an analyte content in a measuring fluid, comprising a measuring probe with a probe housing that comprises an immersion region provided for immersion into the measuring fluid, and a single-layer or multi-layer membrane arranged in the immersion region, wherein the membrane comprises at least a first layer that is formed from a polymer and comprises a superhydrophobic surface that is in contact with the measuring fluid when the immersion region is immersed in the measuring fluid.

Abstract: 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.

Abstract: 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.

Abstract: The present disclosure relates to a sensor cap for an optochemical sensor for determining or monitoring at least one analyte present in a medium having a substantially cylindrical plug-in component and a sleeve-shaped outer component. The plug-in component has an optical component with a convex-shaped surface region for optimal flow, and the optical component at least partially consists of a material transparent to measuring radiation. On the surface region of the optical component is an analyte-sensitive matrix having at least one functional layer. The plug-in component and the sleeve-shaped component are designed such that the connecting region coming into contact with the medium is between the plug-in component and the sleeve-shaped outer component in the edge region of the optical component or is at a radial distance from the edge region of the optical component, and is sealed, without a gap, facing the medium.

Abstract: The present disclosure concerns a membrane for a sensor, such as an opto-chemical or electrochemical sensor, including a polymer layer, for example, one featuring pores or openings, that is permeable to a measuring fluid and/or an analyte contained in the measuring fluid, with a surface designed to be in contact with a measuring fluid, wherein the surface is designed such that, at least in a moist condition of the polymer layer obtained by moistening the surface, a contact angle of a water drop applied to the surface is less than 50°, including less than 30°, and including less than 10°.

Abstract: An arrangement for optical measurement of at least one process variable in a medium, comprising: at least one light source; at least one light receiver; an optical sensor element at least one data processing unit; and a light conductor. The light conductor connects the light source with the optical sensor element and the optical sensor element with the light receiver. The light conductor is embodied with at least three arms, wherein the first arm is arranged at the light source, the second arm is arranged at the light receiver and the third arm is arranged at the optical sensor element first arm and the second arm combine to form the third arm. The invention relates further to a measuring device comprising an above described arrangement.

Abstract: A measuring membrane for an optochemical or amperometric sensor for determining or monitoring an analyte located in a medium, comprising a substrate material and a sensor element, which has at least one functional layer with a sensor-specific substance. The sensor element is embedded completely in a matrix, and the matrix is composed of a material, which at least in a portion facing the medium and adjoining the sensor element is permeable for the analyte.

Abstract: An arrangement for optical measurement of at least one process variable in a medium, comprising: at least one light source; at least one light receiver; an optical sensor element at least one data processing unit; and a light conductor. The light conductor connects the light source with the optical sensor element and the optical sensor element with the light receiver. The light conductor is embodied with at least three arms, wherein the first arm is arranged at the light source, the second arm is arranged at the light receiver and the third arm is arranged at the optical sensor element first arm and the second arm combine to form the third arm. The invention relates further to a measuring device comprising an above described arrangement.