# US 2021/0239502 A1 · Measuring device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0239502 A1 - Document ID: US20210239502A1 - Status: Published application - Kind: A1 - Application number: 16/973,229 - Filed: 2019-05-10 - Published: 2021-08-05 - Earliest claimed: 2018-06-08 - Assignees: Endress + Hauser Flowtec AG - Applicants: Endress+Hauser Flowtec AG - Inventors: Severin Ramseyer - Web page: https://patentgrep.com/patent/US20210239502A1 ## CPC - G01F 1/8409: {constructional details} - G01F 1/8431: {electronic circuits} - G01F 1/8422: {exciters} - G01F 1/8427: {detectors} - G01F 1/8477: {with multiple measuring conduits} - G01F 15/022: {using electrical means} - G01N 9/32: by using flow properties of fluids, e.g. flow through tubes or apertures - G01F 15/02: Compensating or correcting for variations in pressure, density or temperature - G01F: MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME - G01N: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES (measuring or testing apparatus or processes other than immunoassay, involving enzymes or microorganisms C12M, C12Q) ## Abstract A measuring device for measuring flow velocity includes a measuring tube, a measuring transducer for registering a measured variable and outputting a first measured value representing the measured variable, a temperature sensor, and an electronic measuring/operating circuit. The temperature sensor has a sensor element and electrically conductive leads. Each lead is connected with the sensor element and has a first section following on the connection location. The sensor element has a maximum periphery. The first section has a separation of less than 5% of a measuring tube radius from a measuring tube wall, wherein a length of each lead in the first section is at least 25% of the maximum periphery. The leads are guided in their first section at least in certain regions along the maximum periphery, and in their first section are in certain regions in thermal contact with the measuring tube. ## Claims ### Claim 13 A measuring device for measuring flow velocity or volume flow or density of a medium flowing through at least one measuring tube, comprising: the at least one measuring tube for conveying the medium; a measuring transducer adapted to register at least one measured variable and to output at least a first measured value representing the measured variable; at least one temperature sensor adapted to register a temperature of the measuring tube; an electronic measuring/operating circuit configured to operate the measuring transducer and the temperature sensor and provide flow or density measurement values; wherein the temperature sensor has a sensor element and at least two electrically conductive leads for electrical connection of the sensor element with the electronic measuring/operating circuit, wherein each lead is connected with the sensor element in the region of a connection location of the sensor element; wherein each lead has a first section following on the connection location, wherein the sensor element has a maximum periphery; wherein the first section has a separation of less than 5% of a measuring tube radius from a measuring tube wall, wherein a length of each lead in the first section is at least 25% of the maximum periphery; wherein the leads are guided in their first section at least in certain regions along the maximum periphery; wherein the leads in their first section are at least in certain regions in thermal contact with the measuring tube. ### Claim 14 (depends on 13) The measuring device of claim 13, wherein the thermal contact between lead and measuring tube is produced by direct contact or by means of a heat conductive material, wherein the heat conductive material has a thermal conductivity in W/(m*S) of at least 0.5. ### Claim 15 (depends on 13) The measuring device of claim 13, wherein the sensor element is one of the following: resistance element, Peltier element, semiconductor element. ### Claim 16 (depends on 13) The measuring device of claim 13, wherein the temperature sensor includes a securement element adapted to secure the resistance element and the first sections of the leads in certain regions to the measuring tube. ### Claim 17 (depends on 16) The measuring device of claim 16, wherein the securement element is a piece of sheet metal adapted to cover the resistance element as well as the first sections of the leads. ### Claim 18 (depends on 16) The measuring device of claim 16, wherein the securement element includes a central region and two outer regions enclosing the central region, wherein the central region covers the sensor element as well as the first sections of the leads at least in certain regions, and wherein the securement element is secured in the outer regions by welding to the measuring tube. ### Claim 19 (depends on 17) The measuring device of claim 17, wherein the piece of sheet metal is composed of more than one ply. ### Claim 20 (depends on 17) The measuring device of claim 17, wherein the piece of sheet metal or at least one ply of the piece of sheet metal has a specific heat capacity in kJ/(kg*S) of less than 0.9, or wherein the piece of sheet metal or at least one ply of the piece of sheet metal has a thermal conductivity in W/(m*S) of at least 50. ### Claim 21 (depends on 20) The measuring device of claim 20, wherein a first ply of the piece of sheet metal is made of an oxygen blocking and/or water impermeable material, and wherein a second ply of the piece of sheet metal is made, for example, of copper or silver. ### Claim 22 (depends on 13) The measuring device of claim 13, wherein the leads have at least in the region of the securement element electrical insulation, wherein the electrical insulation comprises at least one of the following materials: a plastic, such as, for example, Teflon, polyimide, polyamide, polyethylene, or glass, or glass fabric, or ceramic. ### Claim 23 A Coriolis measuring device, comprising: at least one measuring tube for conveying the medium; a measuring transducer adapted to register at least one measured variable and to output at least a first measured value representing the measured variable; at least one temperature sensor adapted to register a temperature of the measuring tube; an electronic measuring/operating circuit configured to operate the measuring transducer and the temperature sensor and provide flow or density measurement values; wherein the at least one measuring tube is part of the measuring transducer, wherein the measuring transducer has at least one oscillation exciter adapted to excite the at least one measuring tube to oscillate, wherein the measuring transducer has at least two oscillation sensors adapted to register measuring tube oscillation, wherein the electronic measuring/operating circuit is further adapted to ascertain flow measured values or density measurement values based on oscillation characteristics of the measuring tube measured by means of the oscillation sensors, and, wherein the electronic measuring/operating circuit is connected by means of electrical connections with the oscillation sensors as well as with the at least one oscillation exciter. ### Claim 24 (depends on 23) The Coriolis measuring device of claim 23, wherein the measuring device especially includes an electronics housing for housing the electronic measuring/operating circuit.