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.

The present invention allows a sample urine to enter an entry hole formed on a shell and to flow through a flow pathway. A part of the sample urine remains in a groove of the flow pathway as collected urine. A measuring module in the shell includes a first side and a second side. The first side includes a light emitting unit and a light sensing unit. The second side includes a lens. The lens is mounted in the groove. The light emitting unit generates a detection beam. The detection beam passes the lens, the collected urine, a reflective mirror, the lens again, and into the light sensing unit. The light sensing unit receives the detection beam and generates a sensing signal. The processing unit generates a detection result signal according to the sensing signal, and a display unit immediately displays a test result of the sample urine.

A sensor for measuring a pH value of a measuring liquid includes: a sensor element comprising a surface adapted to contact the measuring liquid; a radiation source configured to emit electromagnetic transmission radiation reaching the sensor element, wherein at least a portion of the transmission radiation is converted into measuring radiation by reflection and/or scattering in the region of the surface; a radiation receiver configured to receive the measuring radiation and convert it into electrical signals; and a measuring circuit connected to the radiation receiver and configured to determine a measured value representing the pH value of the measuring liquid from signals of the radiation receiver, wherein the surface adapted to contact the measuring liquid includes a pH-sensitive component and a SERS-active component.

An optical spectroscopy probe including an optical fiber having a distal tip and a microfluidic filtering chamber attached to the distal tip of the optical fiber, the chamber comprising a microfluidic membrane configured to enable liquid to enter the chamber but prevent particles from entering the chamber. Method for fabrication of same.

A probe-type online biomass detection apparatus capable of being subjected to high-temperature sterilization includes an optical fiber probe (1), a light source and light receiving sensor module (2), and a signal processing module (3). A portion, which is required to touch cytosol, of the apparatus adopts a detachable design scheme, to meet requirements for high-temperature sterilization of the probe (1). In the meantime, with regard to influence of bubbles in a fermentation tank on measurement values, a bubble filtering structure is provided, to reduce flow rate and number of the bubbles in the measurement area; and a measurement signal is filtered and optimized through a software algorithm, so that interference of the bubbles is eliminated finally.

A laser absorption spectroscopy exhaust gas sensor includes an optical cell with porous walls having pores with a mean diameter in the range of 0.1 nm to 1 mm; gold mirrors within the optical cell positioned to support a multi-pass optical path within the optical cell; an active heating element adapted to heat the optical cell to prevent condensation; a laser adapted to generate a laser beam; an optical detector adapted to detect a returning laser beam; and a processor for controlling the laser and the active heating element and for analyzing signals from the optical detector to identify a gas in the optical cell.

A probe including a spectrometer adapted to measure the composition of an oxidizing gas after analysis of at least one portion of a light beam having interacted with said gas. The spectrometer includes: a light source adapted to emit a light beam, an optical device comprising optical elements which are configured to guide, towards the gas to be analyzed, at least one portion of the light beam, and guide, towards a detector, a portion of the light beam having interacted with the gas. Further, the probe includes a cage adapted to be removably installed inside a channel through which the gas to be analyzed flows, the cage is configured to permit a flow of the gas through said cage, and at least one portion of the light beam propagates through the cage so as to be able to interact with the gas.

An optical process sensor for measuring at least one measured variable of a medium in a container includes: a housing; a light source in the housing for emitting transmission light; a light detector in the housing for receiving reception light; and an interface including a first mechanical section, which is an integrated part of the housing, and a first optical section having a first path and a first light guide, wherein the first light guide is configured such that transmission light is guided from the light source into the first path via the first light guide and decouples transmission light from the housing, and having a second path and a second light guide, wherein the second light guide is configured such that reception light is coupled into the interior of the housing and guided from the second path to the light detector via the second light guide.

A spectroscopic sensor assembly for detecting at least one predefined analyte constituent of a measurement fluid, the sensor assembly including a sensor housing; a radiation source; a detector device; a barrier assembly, which is transmissive for measurement radiation and is impermeable to the analyte constituent; a polymer matrix, which absorbs and releases the analyte constituent; a reflector assembly, which has a signal side facing the polymer matrix and facing the barrier assembly; wherein the reflector assembly has at least one passage extending through the reflector assembly, through which passage the analyte constituent is exchanged between a measurement environment and the polymer matrix, which polymer matrix is located on the signal side of the reflector assembly; and wherein the reflector assembly reflects incident measurement radiation back toward the apparatus portion; the sensor assembly having a spacing means different from the polymer matrix, the spacing means being designed to prevent the reflector assembly from approaching the barrier assembly.

An optical process sensor for measuring at least one measured variable of a medium in a container includes: a housing; a light source in the housing for emitting transmission light; a light detector in the housing for receiving reception light; and an interface including a first mechanical section, which is an integrated part of the housing, and a first optical section having a first path and a first light guide, wherein the first light guide is configured such that transmission light is guided from the light source into the first path via the first light guide and decouples transmission light from the housing, and having a second path and a second light guide, wherein the second light guide is configured such that reception light is coupled into the interior of the housing and guided from the second path to the light detector via the second light guide.