VIBRATION-TYPE MEASURING SENSOR FOR CONDUCTION MEASUREMENTS IN MEDIA FLOWING INSIDE TWO MEDIUM LINES, AND IN-LINE MEASURING DEVICE EQUIPPED WITH A MEASURING SENSOR OF THIS TYPE

摘要

The measuring sensor comprises: at least for measuring tubes (1, 2, 3, 4), which each have a first and second inlet/outlet end, vibrate at least intermittently, in particular, simultaneously when in operation, and which guide media to be measured; an electromechanical exciting arrangement (60), which subjects the measuring tubes to vibrations, and; a sensor arrangement (70), which reacts at least to local vibrations of the measuring tubes and which serves to generate at least one measurement signal influenced by vibrations of the measuring tubes. Of the at least four measuring tubes, at least two measuring tubes (1, 2) are used at least intermittently over the course of a first medium line in such a manner that each of these two measuring tubes (1, 2) simultaneously guides a partial volume of a medium (M₁) flowing through the first medium line, and of the at least four measuring tubes, two other measuring tubes (3, 4) are used at least intermittently over the course of a second medium line in such a manner that each of these two measuring tubes (3, 4) simultaneously guides a partial volume of a medium (M₂) flowing through the second medium line. The measuring sensor can be simultaneously flowed through by two media (M₁, M₂), which measurably differ from one another in at least one physical property, for example, the mass flow rate, the medium density, and/or medium temperature, and have, despite the different media (M₁, M₂), a good zero-point stability.