Abstract: In a process for determining the percentage of combustible gases in air by means of a detection element catalytically supporting the combustion, this detection element is heated with an excitation function according to a predeterminable current-voltage pattern, and the response function resulting from this is investigated with respect to the position of its maximum (differentiation). If a time interval limit (3) is exceeded by the maximum, a first gas type factor is sent to the evaluating circuit, and if the maximum does not reach the interval limit (3), a second gas type factor is determined and is evaluated as a calibrating value and for the classification of the combustible gases to be investigated.

Abstract: The invention is directed to a method of operating a measuring arrangement for detecting combustible gases in a gas mixture with the measuring arrangement including a display unit, a measuring unit, a detector element and a drivable compensator element. The method is improved in that the power input is minimized.

Abstract: A sealing arrangement for a sliding bearing for carrying heavy loads in which two plate-shaped bearing metal sections are displaceable relative to each other. These are provided with sliding plates fastened between them. One of these is larger than the other, and a lubricant is applied between the sliding plates. A sealing strip encloses the sliding surface at a distance therefrom, and carries the smaller sliding plate. It also adheres to the larger sliding plate. A gap is formed between the sealing strip and the sliding surface or smaller sliding plate, and this gap is completely filled with lubricant. The sealing strip is made of flexible material, and may be stretched elastically under the pressure of the initial lubricant filling the gap. The sealing strip, furthermore, may be made of spongy absorbent material with a U-shaped cross section, while being open towards the larger sliding plate which is provided with its own lubricant filling.