Abstract: A probe for measuring pressure oscillations includes an inner tube functioning as a measuring tube, an outer tube positioned so as to envelop the measuring tube, a toroidal space open to one side being defined between an outer wall of the measuring tube and an inner wall of the outer tube, a pressure transmitter, which is in connection with the interior of the measuring tube in the area of a transmitter end of the measuring tube, and a semi-infinite tube, which is connected at a first end to the transmitter end of the measuring tube, and which is connected at a second end to the toroidal space. The semi-infinite tube is constructed as a winding positioned around at least one of the measuring tube and the outer tube, thereby providing a compact and robust construction of a probe module, which is suitable especially for continuous use in the measuring of combustor pulsations in gas turbines.

Abstract: The invention pertains to a probe for measuring pressure pulsations. The probe comprises an inner tube (1) functioning as a measurement tube; an outer tube (12) arranged to envelop the measurement tube, and forming a toroidal space (14) between the inner and the outer tube; a pressure transmitter (6) which is in connection with the interior of the measurement tube on a transmitter side of said tube; a semi-infinite tube (8) with a first end in connection with the transmitter side end (3) of the measurement tube, and with a second end (11) in connection with the toroidal space. The semi-infinite tube (8) is arranged as a winding around the inner and/or outer tube, resulting in a compact and robust design of the probe, which is especially suited for a long-duration use for the measurement of combustor pulsations of gas turbines.(FIG.

Abstract: A device for gas sampling for gas analysis is provided which uses detector tubes. The device includes a test gas container with a gas inlet pipe, a gas outlet pipe, a mounting opening for the detector tube and with a break-off device for a detector tube tip located in the mounting opening. Nonreturn valves are provided on the gas inlet pipe and the gas outlet pipe. The closing bodies of the nonreturn valves are pressed by springs against corresponding valve seats and are held in a closed position, and are arranged in relation to one another such that a sample gas flow can be established from the gas inlet pipe to the gas outlet pipe.

Abstract: The present invention discloses a high temperature pyrometer 20 which is suitable, in particular, for temperature measurement in a gas turbine. The pyrometer comprises a flexible lightguiding measuring probe 21 with a microlens 22 resistant to high temperatures and with an optic fiber 24 composed of quartz or sapphire, said microlens and said fiber being provided with a gold sheathing 25, 26 and/or a protective capillary 27, 28. The heat radiation is evaluated in a remote detector 32 having measuring electronics 33 connected to it. The pyrometer 20 is distinguished by compactness, high temperature capability, flexibility, versatile installability and high measuring accuracy. The invention also relates to a development of the pyrometer 20 for gas turbines, to a gas turbine with a pyrometer 20 according to the invention, and to a method for monitoring a gas turbine with the aid of a pyrometer 20.

Abstract: A holder for a test tube with a test robe tip that can be opened, with a tube, which accommodates the test tube at least partially, and whose tube end has a projection pointing toward the test tube tip in the area of the test tube tip. The handling steps needed to open the test tube are reduced by providing a projection beginning from the tube end, with a cross-sectional area decreasing continuously over at least a section. A displacement zone is provided between the projection and the test tube in such a manner that the projection can be brought into contact with the test tube tip upon pressure on the tube end.

Abstract: The invention is directed to a testing and measuring device for colorimetrically detecting gases on a carrier which is impregnated with a solution of a moisture store and a detecting indicator. The testing and measuring device is improved in that the moisture on the indicator carrier needed for the detecting reaction is maintained over a longer time span during storage in the unused condition as well as during measurement under the action of the gaseous substance to be detected. For this purpose, the impregnating solution is composed of the detecting indicator and a mixture of sulfolane and diethylphthalate as a moisture store. For measuring hydride gases, the indicator comprises a palladium tetramine chloride. The impregnating solution is applied to a paper carrier or to a granular silica gel carrier.

Abstract: The invention is directed to a testing and measuring device for colorimetrically detecting hydride gases on a carrier which is impregnated with a solution of glycol and with a salt as an indicator. This measuring device is improved in that its long-term stability is increased and the detection of especially the smallest quantities is made possible by a clearly recognizable color change. For this purpose, only a salt, palladium chloride or palladium tetramine chloride, is present in the solution in addition to the glycol.

Abstract: The invention is directed to an arrangement for detecting gaseous components in air wherein an air pumping device pumps a sample quantity through the testing tube. The air pumping device includes a receiver for the testing tube and the charge in the testing tube is evaluated. The arrangement is improved in that the detection of different components with the corresponding testing tubes is conducted automatically in that the data characteristic for the measurement is automatically considered and processed to a display of the measured values. For this purpose, the testing tube is provided at its outer periphery with a machine-readable memory whose data is detected by a read unit when the testing tube is introduced into the receiver of the pumping device. The data from the machine-readable memory is conducted to an evaluation unit.

Abstract: The invention relates to a dosimeter wherein the substances to be detected color a chemical sensor layer. The degree of coloration of the chemical sensor layer is measured by a photometric diffusion-reflectance measuring device. This dosimeter is improved with respect to a measurement occurring during the time that the contaminant substance is effective. The foregoing is accomplished with the dosimeter of the invention in that the dosimeter has a measuring chamber which receives a diffusion element and with a light impermeable wall portion which closes off the diffusion element while at the same time being permeable to the substance to be detected. A light source and a photosensor are arranged in the measuring chamber.

Abstract: A diffusion sampler includes a vessel which has at least one inlet opening exposed to the gas to be investigated and which has a moderating zone. In its interior, the vessel has a collecting region provided with a collecting medium as well as a conversion region for converting the gas into substances which can be taken up by the collecting medium. The diffusion sample is improved in that its detection sensitivity is increased and that the collecting region as well as the converting region are provided with large areas in a manner adapted to the geometry of the vessel so that a smaller and more manipulable configuration is obtained. In addition, long-term dosimetry is made possible. For this purpose, the moderating zone is configured as a permeable barrier from which the converting region as well as the collecting region extend and determine the diffusion path in the entire interior of the vessel with each region being applied to a carrier.

Abstract: A dosimeter for detection of noxious substances which are collected on a plaque-like substrate carrier, which is closed off against the outside by a diffusion membrane fitted to it, is improved so that a uniform fit can be achieved over the entire surface of the membrane. For this, the substrate carrier is curved outwardly.