Abstract: An electrochemical gas sensor (1) having a stacked assembly of at least one first electrode (3) and a second electrode (6), which are respectively arranged on a carrier membrane (2, 5), and a separator (4) arranged between the electrodes (3, 6), including a gas conduction path (14) between the first electrode (3) and the second electrode (6). The gas conduction path (14) is constituted within the structural space defined by the electrodes (3, 6).

Abstract: A method and a device are for predicting a life expectancy of a product, which includes at least two components. The life expectancy is ascertained as a function of an assumed field loading of the product. The components of the product are acted upon by different loadings and are operated, in each instance, at the different loadings until they fail. An end-of-life curve of the component is recorded on the basis of the load-dependent failure times of a component. An EOL curve of the product is ascertained such that at the different loadings, it includes the EOL curve of the components which has, in each instance, the shortest failure time at the corresponding loading. The anticipated service life of the product is determined as a functional value of the EOL curve of the product as a function of the predefined loading of the product.

Abstract: A method and a device are for predicting a life expectancy of a product, which includes at least two components. The life expectancy is ascertained as a function of an assumed field loading of the product. The components of the product are acted upon by different loadings and are operated, in each instance, at the different loadings until they fail. An end-of-life curve of the component is recorded on the basis of the load-dependent failure times of a component. An EOL curve of the product is ascertained such that at the different loadings, it includes the EOL curve of the components which has, in each instance, the shortest failure time at the corresponding loading. The anticipated service life of the product is determined as a functional value of the EOL curve of the product as a function of the predefined loading of the product.

Abstract: A method for determining the concentration of a substance in a gaseous medium using a chemical sensor is disclosed. To ensure that the concentration is within the nominal measuring range of the sensor, the sample gas stream is mixed with a diluting gas stream in a mixing device to form a measured gas stream. This mixing process involves setting an adjustable dilution ratio and alternately supplying the sample gas stream and diluting gas stream to the mixing device. By adjusting the amount of time each gas is supplied to the mixing device the dilution ration can be varied to thereby maintain the concentration of the substance detected by chemical sensor within the nominal measuring range of the sensor. Calculation of the concentration of the substance is thus simplified since the dilution ration is automatically a known quantity since the sample gas stream and diluting gas stream are supplied cyclically alternately and in succession with a definite volume flow to measuring device.