Abstract: In a method for manufacturing an electrochemical gas sensor for sensing a target gas, a semi-manufactured gas sensor is provided. The semi-manufactured gas sensor comprises a substrate supporting an arrangement comprising a thin film of a thickness s?5 pm arranged between a sensing electrode configured to chemically interact with the target gas and a reference electrode facing the substrate. The thin film is an electronically non-conducting and ionically non-conducting ceramic or glass. The arrangement then is heated to an annealing temperature for irreversibly turning the thin film into an ionic conductor by incorporating mobile ions released from the sensing electrode in response to the heating.

Abstract: The invention relates to a sensor device (1) for detecting a gas (G), particularly a permanent gas such as H2, CO, CO2, CH4, comprising: an adsorption filter (30) comprising a body (2) consisting of a molecular sieve material, a sensing element (10) for detecting said gas (G), and a carrier (4) for carrying the sensing element (10), wherein the carrier (4) comprises an opening (50) via which said gas (G) to be detected can reach the sensing element (10), and wherein the adsorption filter (30) is connected, particularly glued, to the carrier (4) and closes said opening (50) so that said gas (G) to be detected can diffuse through said body (2) towards the sensing element (10).

Abstract: A device for holding a target gas comprises a compartment configured to hold the target gas. The device further comprises a gas generator configured and arranged to release the target gas in the compartment in response to a control signal. The device further comprises a reference sensor sensitive to the target gas and arranged to supply a sensor signal representing a concentration of the target gas in the compartment. A control unit is provided and configured to control the release of the target gas from the gas generator by way of the control signal, dependent on the sensor signal. The gas generator and the reference sensor are arranged in the compartment.

Abstract: The invention relates to a sensor device (1) for detecting a gas (G), particularly a permanent gas such as H2, CO, CO2, CH4, comprising: an adsorption filter (30) comprising a body (2) consisting of a molecular sieve material, a sensing element (10) for detecting said gas (G), and a carrier (4) for carrying the sensing element (10), wherein the carrier (4) comprises an opening (50) via which said gas (G) to be detected can reach the sensing element (10), and wherein the adsorption filter (30) is connected, particularly glued, to the carrier (4) and closes said opening (50) so that said gas (G) to be detected can diffuse through said body (2) towards the sensing element (10).

Abstract: A breath analyzer is described with at least one chemical sensor sensitive to the concentration of a component in a sample of exhaled breath including a compensator for compensating for the effect of variations in the amount of exhaled breath between the user and the sensor location with the chemical sensor being integrated into a portable electronic device, particularly with the sensor being located in an air duct with an opening to the exterior of the housing of the analyser with the total area of the opening being sufficiently small to restrict effectively mass transport between the exterior and the sensor and/or wherein the compensation includes the compensation for different responses of sensors.

Abstract: A measuring device is provided for determining the type and/or concentration a gaseous analyte from a set of analytes in a gaseous carrier. It comprises a housing having a passage to a cavity. A gas sensor with a heated metal-oxide sensing layer is arranged in the cavity. In order to gain a better understanding of the type of the analyte, diffusion effects are exploited by taking into account that the diffusion process through the passage as well as the catalytic reaction rate at the metal-oxide sensing layer depend on the type of the analyte. These material parameters can be determined by taking several measurements in a non-steady state of the concentration of the analyte within the cavity or while varying the reaction rate.