Abstract: A method for determining at least one gas parameter, of a flowing gas, by means of a flow meter, comprising a measurement section having a heating element and at least three temperature sensors, over which the gas is fed, at least one first temperature sensor being arranged upstream of the heating element, at least one second temperature sensor being arranged in the region of the heating element, and at least one third temperature sensor being arranged downstream of the heating element, wherein a calculation unit determines the at least one gas parameter as a function of the temperature measurement values at the first, second and third temperature sensors, and/or at least two separate gas parameters as a function of the temperature measurement values of individual different temperature sensors and/or the combinations of temperature measurement values of different temperature sensors.

Abstract: A gas meter is provided. The gas meter has a gas inlet, a gas outlet and a measuring section. A measuring device for thermal flow measurement can be arranged in the measuring section. A filtering device for removing particulate impurities is arranged downstream of the gas inlet. Gas diverted from the main gas flow is supplied to the filtering device for purifying the gas. After the purification, the purified gas is fed to the measuring device arranged downstream of the filtering device.

Abstract: A gas meter comprising a meter housing with a gas inlet with associated connecting piece for a gas supply line and a gas outlet with associated connecting piece for a gas discharge line, wherein the meter housing (2) is a bellows gas meter housing in which a measuring device (12) comprising a housing (13) with an integrated micro-thermal flow measuring sensor (20) is arranged on the gas outlet (11), which housing (13) is connected in a gas-tight manner to the connecting piece (10) on the outlet side or to the meter housing (2) in the area of the gas outlet (11).

Abstract: A method for determining at least one gas parameter, of a flowing gas, by means of a flow meter, comprising a measurement section having a heating element and at least three temperature sensors, over which the gas is fed, at least one first temperature sensor being arranged upstream of the heating element, at least one second temperature sensor being arranged in the region of the heating element, and at least one third temperature sensor being arranged downstream of the heating element, wherein a calculation unit determines the at least one gas parameter as a function of the temperature measurement values at the first, second and third temperature sensors, and/or at least two separate gas parameters as a function of the temperature measurement values of individual different temperature sensors and/or the combinations of temperature measurement values of different temperature sensors.

Abstract: The present invention relates to an ultrasound transducer assembly for an ultrasound flowmeter, comprising a one-part or multi-part housing (2), which is provided to be connected to a line carrying the medium to be measured, wherein the ultrasound transducer transmits ultrasound through the housing (2) and the ultrasound transducer assembly has the following features: an ultrasound transducer body (4, 7) with a first main surface on the side facing the medium and a second main surface on the side facing away from the medium, first, preferably planar, contact means for electrically contacting the first main surface of the ultrasound transducer body (4, 7), second, preferably planar, contact means for electrically contacting the second main surface of the ultrasound transducer body (4, 7), wherein the first contact means are located between the ultrasound transducer body (4, 7) and the housing (2), through which ultrasound is to be transmitted, of the ultrasound flowmeter.

Abstract: Flowmeter for a fluid, comprising a duct unit which forms the ducts of the flowmeter, the duct unit having a plurality of ducts in a measurement region, and at least one measuring device being arranged in one of these ducts, the duct unit comprising a dividing device with one or more dividing stages for apportioning the fluid flowing into the flowmeter to the ducts, the or each dividing stage comprising at least one damming element which apportions fluid flowing through an inflow duct to at least two subducts, characterized in that the dividing device and/or an accelerating device, which is arranged in at least one of the ducts between the dividing device and measurement region, are/is designed to accelerate the fluid in such a way that the fluid has a first flow velocity upstream of the dividing device and in the measurement region a second flow velocity which is at least 1.5 times as high, in particular at least twice as high.

Abstract: A gas meter, having a gas inlet, a gas outlet and a measuring section, in which a measuring device, in particular a measuring device for thermal flow measurement, is arranged, wherein a filtering device for removing particulate impurities is arranged downstream of the gas inlet, characterized in that the filtering device (9) is supplied with and purifies only a gas portion which is diverted from the main gas flow, after which the purified gas portion is fed to the measuring device (5) arranged downstream of the filtering device (9).

Abstract: A method for correcting offset drift effects of a thermal measurement device (10) which comprises at least one temperature sensor (15a, 15b) arranged at a defined distance from a heating device (12) for a fluid to be measured, for measuring at least one measurement variable describing the temperature and/or temperature profile during operation of the heating device (12), in which a reference measured value (35) is measured at a reference time in a first measurement of the measurement variable with the heating device (12) turned off, in which a drift measured value (36) is measured at at least one later time in a second measurement of the measurement variable with the heating device (12) turned off, and in which a drift correction is carried out during the measurement by using the heating device (12) on the basis of a difference between the drift measured value (36) and the reference measured value (35).

Abstract: The present invention relates to a measurement insert for a flow meter and a flow meter. The present invention discloses using, in a customary housing of a bulk water meter, e.g. a Woltman meter, instead of a device for mechanical flow measurement a measurement insert which comprises an ultrasonic measurement path and can be fastened to the opening of the housing by a housing cover.

Abstract: A gas meter comprising a meter housing with a gas inlet with associated connecting piece for a gas supply line and a gas outlet with associated connecting piece for a gas discharge line, wherein the meter housing (2) is a bellows gas meter housing in which a measuring device (12) comprising a housing (13) with an integrated micro-thermal flow measuring sensor (20) is arranged on the gas outlet (11), which housing (13) is connected in a gas-tight manner to the connecting piece (10) on the outlet side or to the meter housing (2) in the area of the gas outlet (11).

Abstract: A gas meter comprising a housing (2) with a gas inlet connection (5) and an inflow chamber (16) which is arranged downstream of the latter and into which gas flows via an inflow opening (14), arranged downstream of which inflow chamber (16) is a measuring section (19) arranged upstream of a gas outlet connection (6) and having a measuring device (20), in which the gas flow is measured, wherein projecting into the inflow chamber (16) there is a tube (15) which merges into the measuring section (19) or forms the latter and runs substantially perpendicularly to the gas flow direction through the inflow opening (14) and overlaps the inflow opening (14), at least in a certain section.

Abstract: Flow straightener for a flowmeter, in particular an ultrasonic metering device, which can be fitted into a flow pipe which is upstream of or in the flowmeter and through which the fluid to be measured flows with a main direction of flow (H), comprising a number of vanes (11, 12, 16, 17), which each have surfaces (13) that are parallel to one another and, in the fitted position, run parallel to the main direction of flow (H) of the fluid to be measured, the vanes (11, 12, 16, 17) being arranged in such a way that, in the fitted position, the flow cross section (Q) of the fluid-carrying flow pipe is subdivided into a number of partial cross sections (TQ1,2,3,4,5), at least some of the partial cross sections (TQ1,2,3,4,5) being of different sizes.

Abstract: The present invention relates to a housing arrangement for an ultrasound flow meter, comprising a unipartite or multipartite housing (2) provided to be connected to a fluid line, comprising an ultrasonic transducer having an ultrasonic transducer body and a housing or covering which at least partially surrounds the ultrasonic transducer body, comprising a housing opening provided in the housing (2) for positioning the ultrasonic transducer at the housing arrangement, comprising a sealing element arranged between the housing (2) and the ultrasonic transducer, wherein a housing insert (5) can be inserted in the housing opening (16) as a module, the housing insert (5) is adapted to receive at least two ultrasonic transducer bodies (4, 7) which are positioned separately, without the ultrasonic transducer body (4, 7) coming into contact with the fluid, and the housing insert (5) is connected to the housing (2) via a sealing element (13) which is common to the ultrasonic transducer bodies (4, 7) which are positione

Abstract: The present invention relates to an ultrasound transducer assembly for an ultrasound flowmeter, comprising a one-part or multi-part housing (2), which is provided to be connected to a line carrying the medium to be measured, wherein the ultrasound transducer transmits ultrasound through the housing (2) and the ultrasound transducer assembly has the following features: an ultrasound transducer body (4, 7) with a first main surface on the side facing the medium and a second main surface on the side facing away from the medium, first, preferably planar, contact means for electrically contacting the first main surface of the ultrasound transducer body (4, 7), second, preferably planar, contact means for electrically contacting the second main surface of the ultrasound transducer body (4, 7), wherein the first contact means are located between the ultrasound transducer body (4, 7) and the housing (2), through which ultrasound is to be transmitted, of the ultrasound flowmeter.

Abstract: The invention relates to a seal for the connecting region (2) between a housing connection piece (3) of a flowmeter (4) and a pipe end or pipe bushing (5), the seal (1) having a first sealing component (6) made from soft material, the seal (1) comprising additionally at least one second sealing component (7) made from a material which is harder than that of the first sealing component (6).

Abstract: A gas meter comprising a housing (2) with a gas inlet connection (5) and an inflow chamber (16) which is arranged downstream of the latter and into which gas flows via an inflow opening (14), arranged downstream of which inflow chamber (16) is a measuring section (19) arranged upstream of a gas outlet connection (6) and having a measuring device (20), in which the gas flow is measured, wherein projecting into the inflow chamber (16) there is a tube (15) which merges into the measuring section (19) or forms the latter and runs substantially perpendicularly to the gas flow direction through the inflow opening (14) and overlaps the inflow opening (14), at least in a certain section.

Abstract: The present invention relates to a housing arrangement for an ultrasound flow meter, comprising a unipartite or multipartite housing (2) provided to be connected to a fluid line, comprising an ultrasonic transducer having an ultrasonic transducer body and a housing or covering which at least partially surrounds the ultrasonic transducer body, comprising a housing opening provided in the housing (2) for positioning the ultrasonic transducer at the housing arrangement, comprising a sealing element arranged between the housing (2) and the ultrasonic transducer, wherein a housing insert (5) can be inserted in the housing opening (16) as a module, the housing insert (5) is adapted to receive at least two ultrasonic transducer bodies (4, 7) which are positioned separately, without the ultrasonic transducer body (4, 7) coming into contact with the fluid, and the housing insert (5) is connected to the housing (2) via a sealing element (13) which is common to the ultrasonic transducer bodies (4, 7) which are positione

Abstract: The present invention relates to a measurement insert (7) for a flow meter (1) and a flow meter. The present invention discloses using, in a customary housing (2) of a bulk water meter, e.g. a Woltman meter, instead of a device for a mechanical flow measurement a measurement insert (7) which comprises an ultrasonic measurement path (8) and can be fastened to the opening (6) of the housing (2) by means of a housing cover (9).

Abstract: The invention relates to a fluid meter (1) having a measuring tube housing (2), a measuring zone (3) inside the measuring tube housing (2), an ultrasonic transducer configuration of at least one ultrasonic transducer (4 and/or 5) for generating an ultrasonic signal and/or converting an ultrasonic signal passing through the measuring zone (3) into an electric signal and a deflecting device (11) for deflecting the ultrasonic signal in particular in the longitudinal direction of the measuring tube (3) such that the surface normal N of the ultrasonic transducer (4 and/or 5) is arranged so it is inclined laterally based on the top position of the fluid-filled interior of the measuring tube housing (2) in the installed position with the plane E such that the ultrasonic signal does not strike the deflecting device (11) from above in the installed position of the fluid meter (1).

Abstract: A differential pressure system and a gas meter arrangement for precisely measuring a gas consumption by a gas meter is provided. A previously known gas meter is disposed in a bypass comprising a differential pressure system in the gas pipe for measuring a volumetric flow rate inside the gas pipe. The differential pressure system includes flow ducts having decreasing diameters as the radial position increases starting from a central axis of the differential pressure system. Examples of execution include inlet ports and/or outlet ports of the flow ducts which are provided with a specific countersink angle (?), and an equidistant, concentric arrangement of flow ducts on the cross-sectional area of the differential pressure system.