A vibrating flow meter (205) is provided. The vibrating flow meter (205) includes a single curved flow conduit (210), a conduit temperature sensor T1 (291) affixed to the single curved flow conduit (210), a balance structure (208) affixed to and opposing the single curved flow conduit (210), and a balance temperature sensor T2 (292) affixed to the balance structure (208). A conduit temperature sensor resistance of the conduit temperature sensor T1 (291) and.a balance structure temperature sensor resistance of the balance temperature sensor T2 (meter2) are selected to form a predetermined resistance ratio.

Vibrating flow meter and method for measuring temperature

The invention relates to a transformer device comprising a transformer housing (100), a pipe (10), and a temperature sensor (70). The pipe is arranged within a cavity of the transformer housing such that, between an inner surface (100+) of a wall of the transformer housing facing the cavity and a shell surface (10#) of a wall of the pipe facing the cavity, an intermediate chamber (100') is formed. The pipe is furthermore designed to conduct a fluid (FL1) in the lumen thereof such that an inner surface (10+) of the wall of the pipe facing said lumen contacts the fluid conducted in the lumen. The temperature sensor (70) is formed by two temperature sensors (701, 702) arranged within the intermediate chamber (100') and by a coupling element (712) which couples the temperature sensor (701) to the wall of the pipe and by a coupling element (722) which couples the temperature sensor (702) to the temperature sensor (701) in a thermally conductive manner and is additionally designed to detect a measurement point temperature (ϑ1; ϑ2), namely a temperature at a first or second temperature measurement point formed by means of the temperature sensor (701; 702), and to transform said temperature into a corresponding temperature measurement signal (Θ1; Θ2), namely an electrical measurement signal representing the measurement point temperature (01; 02).

Transformer device and measurement system formed therewith

Die Wandlervorrichtung umfast ein Wandler-Gehause (100), ein Rohr (10), einen Temperatursensor (71) sowie einen Temperatursensor (72). Das Rohr ist innerhalb einer Kavitat des Wandler-Gehauses angeordnet, derart, das zwischen einer der Kavitat zugewandte Innenflache (100+) einer Wandung des Wandler-Gehauses und einer der Kavitat zugewandten Mantelflache (10#) einer Wandung des Rohrs ein Zwischenraum (100') gebildet ist. Ferner ist das Rohr dafur eingerichtet, in dessen Lumen ein Fluid (FL1) zu fuhren, derart, das eine namlichem Lumen zugewandte Innenflache (10+) der Wandung des Rohrs von im Lumen gefuhrtem Fluid kontaktiert ist. Jeder der Temperatursensoren (71; 72) ist jeweils mittels eines innerhalb des Zwischenraums (100') angeordneten Temperaturfuhlers (711; 721) sowie jeweils mittels eines den jeweiligen Temperaturfuhler (711; 721) thermisch leitend mit der Wandung des Rohrs koppelnden Kopplungskorpers (712; 722) gebildet und zudem dafur eingerichtet, eine jeweilige Messtellentemperatur (ϑ1; ϑ2), namlich eine Temperatur an einer mittels des jeweiligen Temperaturfuhlers (711; 721) gebildeten ersten bzw. zweiten Temperaturmesstelle, zu erfassen und in ein entsprechendes Temperaturmessignal (θ1; θ2), namlich ein die jeweilige Messtellentemperatur (ϑ1; ϑ2) reprasentierendes elektrisches Messignal zu wandeln.

Wandlervorrichtung sowie damit gebildetes messsystem

The invention relates to a measuring system comprising a transducer device (MW) having two tubes (11, 12), each of which has a lumen (11') surrounded by a wall, in particular a metal wall, and which extend from respective inlet-side ends (11a, 12a) to respective outlet-side ends (11b, 12b) and which are each designed for the flow of a fluid therethrough from the respective inlet-side ends toward the respective outlet-side ends and for being vibrated during said flow. An electromechanical exciter assembly formed by means of at least one vibration exciter (41) is used to excite and maintain mechanical vibrations of each of the tubes (11, 12) about an associated static resting position, and a sensor assembly (S) formed by means of at least one vibration sensor (51) is used to sense mechanical vibrations of at least one of the tubes (11, 12). In addition, the transducer device has two temperature sensors (71, 72), wherein temperature sensor (71) is coupled mechanically yet in a thermally conductive manner to a wall of the tube (11) and temperature sensor (72) is coupled mechanically yet in a thermally conductive manner to a wall of the tube (12) and wherein each of the temperature sensors (71, 72) is designed to sense a measurement-point temperature (θ1, θ2) and to convert said measurement-point temperature into a temperature measurement signal (Θ1; Θ2). In addition, the temperature sensor (71) is positioned at a smaller distance from end (11a) than from end (11b), while the temperature sensor (72) is positioned at a smaller distance from end (12b) than from the (12a). In addition, a measuring and operating electronic unit (ME) of the measuring system, which is electrically coupled to the transducer device, is designed to generate a transducer temperature measurement value by using the temperature measurement signals (Θ1, Θ2), which transducer temperature measurement value represents a transducer device temperature, which deviates both from measurement-point temperature (θ1) and from measurement-point temperature (θ2), in such a way that the magnitude of said transducer temperature measurement value is greater than the magnitude of measurement-point temperature (θ1) yet less than the magnitude of measurement-point temperature (θ2).

Vibration-type fluid flow-rate measuring system having temperature compensation

transducer apparatus comprises a transducer housing, a tube, a temperature sensor as well as a temperature sensor. The tube is arranged within a cavity of the transducer housing, in such a manner that an intermediate space is formed between a wall of the transducer housing facing the cavity inner surface and an outer surface of a wall of the tube facing the cavity. Furthermore, the tube is adapted to guide a fluid in its lumen, in such a manner that an inner surface of the wall of the tube facing the lumen is contacted by fluid guided in the lumen. Each of the temperature sensors is formed by means of a temperature detector arranged within the intermediate space as well as by means of a coupling body coupling the respective temperature detector thermally conductively with the wall of the tube and is additionally adapted to register a particular measurement location temperature, and to transduce such into a corresponding temperature measurement signal, namely an electrical measurement signal representing the particular measurement location temperature.

Transducer apparatus as well as measuring system formed therewith

A curved tube vibrating flow meter ( 5 ) includes a flow tube temperature sensor T T ( 190 ) and a plurality of case temperature sensors T C ( 303 ) affixed to one or more case locations of a case ( 300 ) of the curved tube vibrating flow meter ( 5 ). The plurality of case temperature sensors T C ( 303 ) generate a case temperature signal, wherein a plurality of case temperature sensor resistances at the one or more case locations form a combined case resistance related to thermal importances of the one or more case locations. Meter electronics ( 20 ) receives the flow tube temperature signal, receives the case temperature signal, and compensates the curved tube vibrating flow meter ( 5 ) for thermal stress using the flow tube temperature signal and the case temperature signal.

Brainerd Cleve Craig Van

Papers

Thermal stress compensation in a curved tube vibrating flow meter