Transformer device and measurement system formed therewith

Abstract

The invention relates to a transformer device comprising a transformer housing (100), a pipe (10), a temperature sensor (71), and a temperature sensor (72). 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. Furthermore, the pipe is 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. Each of the temperature sensors (71; 72) is formed by a temperature sensor (711; 721) arranged within the intermediate chamber (100') and by a coupling element (712; 722) coupling the temperature sensor (711; 721) to the wall of the pipe in a thermally conductive manner and is additionally designed to detect a measurement point temperature ([theta]1; [theta]2), namely a temperature at a first or second temperature measurement point formed by the temperature sensor (711; 721) and to transform said temperature into a corresponding temperature measurement signal ([theta]1; [theta]2), namely an electrical measurement signal representing the measurement point temperature ([theta]1; [theta]2).

Description

technical field [0001] The invention relates to a transducer device suitable for measuring the target temperature of the transducer device, as well as the time-variable target temperature, in particular the temperature of a fluid guided in the lumen of a tube, and / or such a device in contact with the fluid The temperature of the wall of the tube. Furthermore, the invention also relates to a measuring system formed by means of such a transducer arrangement. Background technique [0002] A transducer of the type in question comprises: a transducer housing having a cavity enclosed by a wall (usually metal) and a tube having an inner cavity surrounded by a wall (usually metal) and the following Arranged in the cavity of the transducer housing in the above manner: between the inner surface of the wall of the transducer housing facing the cavity and the outer surface of the wall of the tube (ie, the outer surface of the wall of the tube facing the cavity) There is an intermediat...

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Problems solved by technology

Furthermore, the inventors have also detected that the aforementioned thermal coupling can sometimes reach a point where it is no longer practically possible with regard to the degree of high precision of measurement expected for measuring systems of the type in question, especially for electro-vibratory measuring systems. Ignore, respectively, on the contrary, in particular also the time constant target temperature sometimes deviates from the actual (correspondingly true) target temperature by more than 0.5, for example in the manner in which the measured value for the target temperature is determined by the corresponding measuring system in different cases In the case of K, the corresponding neglect of the influence of such a temperature difference on the respectively recorded temperature of the measuring location (and accordingly the temperature measurement signal representing this temperature difference) can lead to very significant measurement errors

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