Abstract: The present disclosure discloses a sensor holder for a flow sensor, comprising a substantially cylindrical housing with a housing interior with an opening at a first front face. The opening is designed to receive the flow sensor. The housing at the second front face, which is opposite the first front face, is conical. A first flushing opens to the housing interior, where the opening opens into the end region of the cone, and a second flushing opens to the housing interior. A fastening unit is designed to fasten the flow sensor in the housing, and a first wall holder is designed to be fastened to a wall. The first wall holder comprises a joint in the region of the second front face, with the joint connecting to the housing. The housing can be moved via the joint from a measurement position into a maintenance position.

Abstract: A cleaning device for cleaning an outer portion of a sensor includes: a pump connected to an air supply line; a pressure accumulator connected to the pump in a housing of the cleaning device, which can be mounted on the sensor; and an exhaust air duct with a pressure-controlled valve connected to the pressure accumulator and connected to at least one nozzle which is aligned on the outer portion to be cleaned. The cleaning device is configured to perform pressure-surge cleaning operations in which air drawn in by the pump is compressed in the pressure accumulator, and the compressed air in the pressure accumulator is expelled as a pressure surge via the at least one nozzle when pressure exerted by the compressed air enclosed in the pressure accumulator exceeds a pressure value required to temporarily open the pressure-controlled valve.

Abstract: A cleaning unit for a sensor with a sensor housing and a drive shaft comprises a holding element which extends along an axis and is suitable for being mounted on the drive shaft so that the cleaning unit can be moved by the drive shaft and a wiper element which is fastened to the holding element and has a ring which axially surrounds the holding element, so that the ring is in contact with the sensor housing of the sensor when the holding element is mounted on the drive shaft, wherein the ring has at least one tooth which extends radially to the axis.

Abstract: The present disclosure discloses a sensor holder for a flow sensor, comprising a substantially cylindrical housing with a housing interior with an opening at a first front face. The opening is designed to receive the flow sensor. The housing at the second front face, which is opposite the first front face, is conical. A first flushing opens to the housing interior, where the opening opens into the end region of the cone, and a second flushing opens to the housing interior. A fastening unit is designed to fasten the flow sensor in the housing, and a first wall holder is designed to be fastened to a wall. The first wall holder comprises a joint in the region of the second front face, with the joint connecting to the housing. The housing can be moved via the joint from a measurement position into a maintenance position.

Abstract: A sensor housing includes: a sensor body with at least one primary retainer arranged in the sensor body; a sensor cover with at least one secondary retainer, the sensor cover configured for arrangement on the sensor body such that the primary retainer and the secondary retainer are enclosed in the sensor body; and a locking unit including at least one locking element configured for releasably connecting the primary retainer and the secondary retainer, wherein the locking element includes a magnetizable material or a magnetic material and is mounted movably between a locking position, in which the locking element locks the primary retainer with the secondary retainer, and an opposing release position, such that the locking element can be moved between the locking position and the release position by an applied magnetic field.

Abstract: The invention relates to an optical system for measuring the absorption of light in a medium, comprising at least one light source for sending light and at least one optical detector, which receives the light and converts it into an electrical signal. The system is characterized in that the system comprises at least one light guide, wherein, in the region of the light source, light is coupled as reference light into the light guide, wherein the light guide is guided, at least in sections, past the medium, and wherein the light guide guides the reference light onto the detector.

Abstract: The invention relates to an optical system for measuring the absorption of light in a medium, comprising at least one light source for sending light and at least one optical detector, which receives the light and converts it into an electrical signal. The system is characterized in that the system comprises at least one light guide, wherein, in the region of the light source, light is coupled as reference light into the light guide, wherein the light guide is guided, at least in sections, past the medium, and wherein the light guide guides the reference light onto the detector.

Abstract: A retractable assembly for immersion-, flow- and annex-measuring systems in analytical process technology for measuring at least one measured variable of a medium in a process containment, comprising an essentially cylindrical housing having a housing interior; an immersion tube, which is axially movable between a retracted service position in the housing and a process position extended from the housing. In the service position, the immersion tube is positioned in the housing interior; a closure element on an end region of the immersion tube facing the medium for sealing off the housing interior from the process containment when the immersion tube is located in the service position, and a proximity detector in or on the end region of the housing facing the medium for detecting the closure element in the service position.

Abstract: A retractable assembly for immersion-, flow- and annex-measuring systems in analytical process technology for measuring at least one measured variable of a medium in a process containment, comprising an essentially cylindrical housing having a housing interior; an immersion tube, which is axially movable between a retracted service position in the housing and a process position extended from the housing. In the service position, the immersion tube is positioned in the housing interior; a closure element on an end region of the immersion tube facing the medium for sealing off the housing interior from the process containment when the immersion tube is located in the service position, and a proximity detector in or on the end region of the housing facing the medium for detecting the closure element in the service position.