Abstract: A detection system for detecting an electrical discharge in an electrical apparatus includes a first sensing device that senses an acoustic wave and an electromagnetic wave and generates a first combined signal. A signal processing device processes the first combined signal and determines the occurrence and properties of an electrical discharge.

Abstract: The present disclosure provides a detection system that includes a first sensing device configured for sensing an acoustic wave and an electromagnetic wave and generating a first combined signal and a signal processing device configured to determine the occurrence and properties of an electrical discharge.

Abstract: A sensing arrangement for detection of electrical discharges in an electrical apparatus is described. The sensing arrangement includes an acoustic sensor and a signal enhancing structure with a funnel region. The acoustic sensor is positioned outside the funnel region on an apex side of the funnel region. An electrical switchgear is described. The electrical switchgear includes a sensing arrangement for detection of electrical discharges in an electrical apparatus. The sensing arrangement includes an acoustic sensor and a signal enhancing structure with a funnel region.

Abstract: The present disclosure provides a method for detecting an electrical discharge in an electrical apparatus. The method includes sensing an electromagnetic wave using an electrical sensor and generating an electric signal for a predetermined time period, sensing an acoustic wave using an acoustic sensor and generating an acoustic signal for the predetermined time period. The acoustic sensor is associated with at least one compartment of the electrical apparatus. Electrical data is generated based on a quasi-periodic characteristic of electric peak sequences of the electrical signal. Acoustic data is generated based on a quasi-periodic characteristic of acoustic peak sequences of the acoustic signal, wherein the electrical data is combined with the acoustic data to provide an operation status of the at least one compartment.

Abstract: The present disclosure provides a detection system that includes a first sensing device configured for sensing an acoustic wave and an electromagnetic wave and generating a first combined signal and a signal processing device configured to determine the occurrence and properties of an electrical discharge.

Abstract: The present disclosure provides a method for detecting an electrical discharge in an electrical apparatus. The method includes sensing an electromagnetic wave using an electrical sensor and generating an electric signal for a predetermined time period, sensing an acoustic wave using an acoustic sensor and generating an acoustic signal for the predetermined time period. The acoustic sensor is associated with at least one compartment of the electrical apparatus. Electrical data is generated based on a quasi-periodic characteristic of electric peak sequences of the electrical signal. Acoustic data is generated based on a quasi-periodic characteristic of acoustic peak sequences of the acoustic signal, wherein the electrical data is combined with the acoustic data to provide an operation status of the at least one compartment.

Abstract: A sensing arrangement for detection of electrical discharges in an electrical apparatus is described. The sensing arrangement includes an acoustic sensor and a signal enhancing structure with a funnel region. The acoustic sensor is positioned outside the funnel region on an apex side of the funnel region. An electrical switchgear is described. The electrical switchgear includes a sensing arrangement for detection of electrical discharges in an electrical apparatus. The sensing arrangement includes an acoustic sensor and a signal enhancing structure with a funnel region.

Abstract: A vibration-type measuring device includes an exciter arrangement which exerts a time-dependent force with at least one sinusoidal component at an adjustable excitation frequency on a measuring tube, through which a medium can flow, and causes the measuring tube to oscillate. The measuring device includes first and second sensors which are fitted to the measuring tube at different locations. The first and second sensors output first and second measurement signals, respectively. The measuring device includes an evaluation unit which determines a first phase shift between the first and second measurement signals and uses the determined phase shift to determine a measurement variable of the medium. The measuring device includes a phase comparator, which determines a second phase shift between the force and the average value of the first and second measurement signals, and a frequency generator which sets the excitation frequency on the basis of the second phase shift.

Abstract: The disclosure relates to a Coriolis mass flowmeter with an oscillatable straight measuring tube consisting of a corrosion-resistant metal, in particular of titanium or a titanium alloy, to which are attached mounted parts connected directly to the measuring tube for the implementation of the Coriolis measurement principle. Furthermore, stabilizing elements running parallel to the measuring tube are coupled to the measuring tube via mounted parts connected directly to the measuring tube, the mounted parts and the stabilizing elements consisting of a metal other than that of the measuring tube. The stabilizing elements are manufactured from a second material which possesses a coefficient of thermal expansion adapted to the metal of the measuring tube. The mounted parts connected directly to the measuring tube are manufactured from a third material which possesses a higher coefficient of thermal expansion than the metal of the measuring tube.

Abstract: A measuring instrument to capture a physical/chemical measured value, including a sensor unit, which is linked via a contactless interface to a transmitter unit, for passing on to a central analysis unit, wherein the sensor unit includes an at least partly internal sensor element which vibrates against a sensor housing because of operation, and which is linked, contactlessly and inside the sensor unit, for sensor signal transmission, via a first transmission/reception unit, to a complementary second transmission/reception unit, which is arranged at a fixed location relative to the sensor housing, and which is also linked, contactlessly and outside the sensor unit, to a third transmission/reception unit of the transmitter unit.

Abstract: A method is disclosed for producing a connection between a measuring tube and at least one flange, e.g., in the case of a Coriolis mass flowmeter. In order to ensure reliable connection of the components in this case, the measuring tube can be inserted at one end over a portion through a flange bore, such that it projects out of the bore on the other side, and that the projecting end be flared out over the sealing face of the flange.

Abstract: A method for compensation for influences, which interfere with the measurement accuracy, in measurement devices of the vibration type, comprising a measurement tube through which a fluid medium can flow and which is caused to oscillate mechanically, acting as an oscillation body, by an excitation unit, whose oscillation behavior, which changes as a function of the flowrate and/or the viscosity and/or the density of the fluid medium, is detected by at least one oscillation sensor in order to determine the flowrate, wherein the material strain in the measurement tube is detected by means of at least one sensor, from which an indicator value for the influence causing the material strain is calculated in order to correct the measurement signal, by signal processing, from the indicator value obtained in this way.

Abstract: A vibration-type measuring device includes an exciter arrangement which exerts a time-dependent force with at least one sinusoidal component at an adjustable excitation frequency on a measuring tube, through which a medium can flow, and causes the measuring tube to oscillate. The measuring device includes first and second sensors which are fitted to the measuring tube at different locations. The first and second sensors output first and second measurement signals, respectively. The measuring device includes an evaluation unit which determines a first phase shift between the first and second measurement signals and uses the determined phase shift to determine a measurement variable of the medium. The measuring device includes a phase comparator, which determines a second phase shift between the force and the average value of the first and second measurement signals, and a frequency generator which sets the excitation frequency on the basis of the second phase shift.

Abstract: The disclosure relates to a Coriolis mass flowmeter with an oscillatable straight measuring tube consisting of a corrosion-resistant metal, in particular of titanium or a titanium alloy, to which are attached mounted parts connected directly to the measuring tube for the implementation of the Coriolis measurement principle. Furthermore, stabilizing elements running parallel to the measuring tube are coupled to the measuring tube via mounted parts connected directly to the measuring tube, the mounted parts and the stabilizing elements consisting of a metal other than that of the measuring tube. The stabilizing elements are manufactured from a second material which possesses a coefficient of thermal expansion adapted to the metal of the measuring tube. The mounted parts connected directly to the measuring tube are manufactured from a third material which possesses a higher coefficient of thermal expansion than the metal of the measuring tube.

Abstract: The disclosure relates to a method for fixing an attachment part on the measurement tube of a Coriolis mass flowmeter at at least two connection points. According to the disclosure, the measurement tube and the attachment part are soldered to one another in a single hard-soldering process at the same time at the at least two connection points.

Abstract: A method for compensation for influences, which interfere with the measurement accuracy, in measurement devices of the vibration type, comprising a measurement tube through which a fluid medium can flow and which is caused to oscillate mechanically, acting as an oscillation body, by an excitation unit, whose oscillation behavior, which changes as a function of the flowrate and/or the viscosity and/or the density of the fluid medium, is detected by at least one oscillation sensor in order to determine the flowrate, wherein the material strain in the measurement tube is detected by means of at least one sensor, from which an indicator value for the influence causing the material strain is calculated in order to correct the measurement signal, by signal processing, from the indicator value obtained in this way.

Abstract: A device for fastening an attachment to a measuring tube of a Coriolis mass flowmeter, comprising a clamping part, which can be pushed onto the measuring tube and can be pressed against the measuring tube by clamping means, the clamping part being formed in the manner of a slotted conical hollow screw, which interacts with a corresponding cone nut as a clamping means in such a way that, when the cone nut is screwed onto the clamping part, the inwardly directed radial force created as a result presses the clamping part against the measuring tube.

Abstract: Method and device to determine the Q factor for a flow meter, with an exciter unit which can be attached to a meter tube to generate a uniform oscillating movement and a sensor unit to measure the oscillating movement, which is influenced by the flow, of the meter tube, and the measured values of which are analyzed by an analysis unit, which is connected downstream, to determine the desired flow parameter and the Q factor, as specified by a stored computational algorithm.

Abstract: A measuring instrument to capture a physical/chemical measured value, including a sensor unit, which is linked via a contactless interface to a transmitter unit, for passing on to a central analysis unit, wherein the sensor unit includes an at least partly internal sensor element which vibrates against a sensor housing because of operation, and which is linked, contactlessly and inside the sensor unit, for sensor signal transmission, via a first transmission/reception unit, to a complementary second transmission/reception unit, which is arranged at a fixed location relative to the sensor housing, and which is also linked, contactlessly and outside the sensor unit, to a third transmission/reception unit of the transmitter unit.

Abstract: The invention relates to a method for producing a cohesive connection between a tube and a built-in housing, in particular for fixing a measuring tube in the housing of a flowmeter, according to the preamble of patent claims 1 and 4. In order to ensure a reliable connection between the components in this case so that a reliable measurement using the Coriolis mass flowmeter is possible, the invention proposes that ring or tube sections are first of all applied to the measuring tube at least one of said connection locations and are connected to the measuring tube by means of a hard solder connection and, in the region of the ring or tube sections which have been soldered on, the latter are then welded to the housing or housing flanges.