Measuring device four determining a differential pressure

Abstract

The invention relates to a measuring device for outputting a measurement signal representing the difference between a first pressure and a second pressure. The measuring device comprises a first pressure transducer module (1) for outputting a sequence of first signals representing the first pressure; a second pressure transducer module (2) for generating a sequence of second signals representing the pressure; an evaluation module (3) for determining a sequence of differential values between the two pressure values and for outputting a sequence of fourth signals representing the respective difference; a first cable connection (14) between the first and the second pressure transducer module; and a second cable connection (28) between the second pressure transducer module and the evaluation module; the modules being spatially separate from each other; ; the second pressure transducer module (2) having an imaging unit (24) which is provided for receiving the sequences of first and second signals and for outputting, via the second cable connection (28), a sequence of third signals containing the respective pressure values to the evaluation module (3).

Description

technical field [0001] The invention relates to a measuring device for outputting a measuring signal representing the difference between a first pressure of a medium at a first location and a second pressure of the medium at a second location. Background technique [0002] Such measuring devices have hitherto mostly been realized as differential pressure measuring transducers comprising a differential pressure transducer comprising a differential pressure measuring membrane to which a first pressure and a second pressure can be applied , where the first pressure and the second pressure oppose each other such that the resulting deformation of the differential pressure measuring membrane is a function of the difference between the first pressure and the second pressure. [0003] The conduction of the first pressure and the second pressure from the set point to the differential pressure transducer is usually accomplished hydraulically through an oil-filled capillary conduit. D...

AI Technical Summary

Problems solved by technology

This technical solution has the disadvantage that the main measuring transducer, usually comprising operating elements and connection clamps for the supply and data lines leaving or entering the control system, must be fitted on the container opening, for example on the bottom of the tank in so-called basins

This technical solution is therefore not suitable for all measuring positions

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