Patent ID: 11879882
Assignee: ENDRESS+HAUSER GROUP SERVICES AG
Field: Measurement (Instruments)
Classification: CPC G  B | IPC B  G

Claim 0:
1. A sensor for determining a measurand dependent on a concentration of a gaseous analyte in a liquid medium, the sensor comprising:
a closed measurement chamber including a gas sensor that is sensitive to the gaseous analyte and configured to generate a measurement signal that is dependent on the concentration of the gaseous analyte in the measurement chamber;
a diffusion membrane that is impermeable to liquid and gas-permeable to the gaseous analyte, which diffusion membrane closes off a side of the measurement chamber, the diffusion membrane including a first surface facing the measurement chamber and a medium-contacting second surface;
an evaluation unit configured to determine the measurand based on the measurement signal of the gas sensor; and
an ultrasound emission unit, which is configured to introduce ultrasonic waves into the medium such that a mixing of the medium is generated in a volume adjacent to the medium-contacting second surface.