Abstract: A method and a device for measuring humidity may be suitable for determining the relative humidity in the high-humidity range. The device includes a sensor device, as well as a circuit connected to the same. The sensor device includes a capacitive humidity-sensor element, a temperature-sensor element, and a heating element, the humidity-sensor element being heated in at least one part of the humidity-measuring range. The ambient temperature is further ascertained by the circuit, from the heating power required in the heating mode, as well as from the measured, local sensor device temperature, in order to further determine the relative humidity.

Abstract: In an air-velocity sensor and a method for operating an air-velocity sensor, the air-velocity sensor includes a temperature sensor arranged in an air flow and sequential electronics. The sequential electronics are used to cyclically impinge upon the temperature sensor with a define heat output and to determine the temperature rise time required by the temperature sensor to heat up to a given temperature difference after being impinged upon with the heat output. Temperature measurements are performed at a defined measuring frequency. The velocity of the air flow is determined on the basis of temperature rise time.

Abstract: A sensor arrangement is suitable for detecting if a windscreen of a motor vehicle is fogging. The sensor arrangement includes a heat conducting layer disposed on a supporting surface, the layer exhibiting good heat conducting properties. A support plate is arranged on top of the heat conducting layer, including a recess and several electrical conductor tracks. A moisture-sensitive sensor element is arranged in the region of the recess of the support plate. The sensor element is electroconductively connected to the conductor tracks on the support plate. The temperature difference between the sensor element and the supporting plate may not exceed a given limit when measurement occurs.

Abstract: A device for measuring moisture is described. This device includes a sensor unit (1) having a moisture-sensitive sensor element (1.1) and a carrier element (2), upon which the sensor unit is mounted. The carrier element (2), as well as the sensor unit (1) have electrical contact regions (1.2a, 1.2b). Carrier element (2) has a recess (6), above which the sensor unit (1) is mounted. The moisture-sensitive sensor element (1.1) is oriented in the direction of the recess (6). The sensor-side contact regions are formed on the side of the sensor unit (1) facing the carrier element (2). In at least one partial region adjacent to the sensor unit (1), the carrier element (2) is provided with a coating (3) which absorbs and/or releases as little moisture as possible.

Abstract: A device is provided for generating a defined relative humidity in a gas. This device includes a saturator chamber connected by at least one connecting line to a measuring chamber. The relative humidity in the measuring chamber can be adjusted by varying the pressures in the saturator chamber and in the measuring chamber. A valve unit is arranged in the connecting line. The valve unit and the portion of the connecting line located between the valve unit and the saturator chamber are in thermal contact with a heating device.