An electrochemical sensor comprising a probe immersible in a measured medium and having at least two electrodes of a first electrically conductive material and at least one probe body of a second, electrically non-conductive material. The electrodes are at least partially embedded in the probe body and insulated from one another by the probe body, wherein the at least two electrodes are embodied of at least one conductive material and the probe body of at least one electrically insulating ceramic, wherein the electrodes are embodied of thin, measuring active layers of a conductive material and sit in an end face of the probe body of a ceramic material, and wherein the electrodes are electrically contacted via connection elements extending through the probe body.

A system for measuring a variable of a liquid and a method operation the system is disclosed. The system comprises: a sensor located on an end section of an elongated sensor support and embodied to measure the variable; a containment device that is open at the top; the containment device including: a bottom section given by a liquid impermeable retainment basin, a top section having a side wall surrounding an interior of the top section and apertures extending through the side wall of the top section; and fasteners embodied to at a measurement site mount the sensor support in a fixed sensor support position in relation to a fixed device position of the containment device such that the sensor is located inside the retainment basin.

A sensor may include a sensing element retained within a storage compartment filled with a storage medium, which may also be used as a calibration medium. The sensing element can include a sensing surface located away from the distal end of the sensing element, such that an inactive section of the sensing element can cooperate with a sealing member such as an O-ring to form part of the seal retaining the storage/calibration medium. The sensing element can be extended and retracted from the storage compartment to expose the sensing surface to a process medium, while preserving the storage medium within the storage compartment for post-measurement validation.

A protective device is disclosed for electrochemical electrodes having a liquid junction, and a transport and retention system therefor. The protective device can include a casing which is configured as a hollow cylinder and which has a inner circumferential first protrusion; a delimiting device which together with the first protrusion delimits a first casing segment having a first inner diameter; a spacer, which is configured as a hollow cylinder having an outer diameter corresponding to the first inner diameter; and a first sealing ring and a second sealing ring between which the spacer is disposed; wherein the first sealing ring, the second sealing ring and the spacer are disposed in an interior of the first casing segment, so that the first sealing ring and the second seal ring delimit a first protection space for a liquid junction whose inner diameter corresponds to an inner diameter of the spacer.

The present disclosure relates to an inline sensor arrangement for the detection of measurement values of a measurand representing an analyte content of a measuring medium, which arrangement comprises: a sensor which is designed to generate and output a measurement signal correlated with the measurand, wherein the sensor has at least one sterile sensor element provided for contact with the measurement medium; and a housing surrounding the at least one sensor element, which housing encloses the sensor element in a chamber sealed tightly against an environment of the housing, and wherein the chamber contains inside it a gas volume that is designed such that an influence of harmful substances—in particular, of reactive nitrogen and/or oxygen species—on the at least one sensor element is largely prevented. The present disclosure further relates to a method for the production of said inline sensor arrangement, and for its commissioning.

An embodiment a pressure compensated pH sensor apparatus, including: a pH sensing component comprising a sensing portion that is exposed to a fluid source when in use; a pressure chamber located in a position under the sensing portion and that surrounds all of the sensing portion not exposed to the fluid source when in use; and a pressure compensation mechanism located within the pressure chamber, wherein the pressure compensation mechanism reacts to pressure from an environment outside the apparatus, thereby support the sensing portion.

A nanoscale temperature detector including a diamond sensing probe with a transverse dimension of at least 200 nanometres and a sensing tip-having a curvature radius of less than 100 nanometres, less than 10 nanometres or less than 1 nanometre, and a plurality of colour centres, whose emission count rate show temperature-sensitive features. The diamond sensing probe has a transverse dimension of at least 200 nanometres and is connected to a to a detector system by means of a mounting structure. A thermal isolation barrier thermally decouples the sensing probe from the detector system.

A storage device (20) stores a gas measuring device (10). The gas measuring device (10) has at least one electrochemical sensor (11) for measuring the concentration of a gas. The storage device (20) has a temperature control device (21) for controlling the temperature of the electrochemical sensor (11). A system (40) includes such a storage device (20) and a gas measuring device (10) that is stored therein. The temperature control device (21) is arranged at the storage device (20) such that the temperature control device (21) is located opposite the electrochemical sensor (11) of the gas measuring device (10) during the temperature control. A process for storing a gas measuring device (10) in such a storage device (20) includes controlling the temperature of the electrochemical sensor (11) of the gas measuring device (10) by the temperature control device (21) during the storage.

A sensor may include a sensing element retained within a storage compartment filled with a storage medium, which may also be used as a calibration medium. The sensing element can be moved from a first position in which the sensing element is exposed to the storage compartment, and a second position in which the sensing element can be exposed to a process medium. An actuator mechanism may be configured to engage a portion of the sensor to move the sensing element between the first position and the second position. The actuator mechanism may be controlled by an external system, and may include a rotary actuator such as a servomotor or a stepper motor to move the sensing element between the first position and the second position.

An electrode assembly includes a hollow outer body, a cap, a biasing assembly, an actuator, and a sensing electrode having a hollow stopper at a lower end thereof. The outer body includes a lower edge that defines a lower opening. The cap is fixedly coupled to the outer body so that the cap does not move with respect to the hollow outer body. The biasing assembly is operatively coupled to the hollow outer body and the sensing electrode, and urges the sensing electrode upward so that an outer surface of the stopper is normally in contact with the lower edge of the outer body. The actuator is configured to move relative to the outer body so that when force is applied to the actuator, the stopper separates from the lower edge of the outer body, thereby allowing an electrolytic solution to flow out of the outer body.