G - Physics – 01 – F
Patent
G - Physics
01
F
73/69
G01F 1/60 (2006.01)
Patent
CA 1327901
Abstract The specification discloses a method of magnetic-inductive flow measurement in which a measurement produced by a periodically alternat- ing sectionally constant magnetic field is processed in a section of every half period, and a magnetic-inductive flow meter comprising a coil producing a magnetic field, a magnetic field control circuit connected to the coil, an electrode arrangement disposed substantially perpendicular to the magnetic field and the direction of flow, an amplifier connected to the electrode arrangement and an evaluating circuit. This is intended to solve the problem. For this purpose, the sectionally constant simulating quantity is produced so that it changes in synchronism with the magnetic field and is processed in a further section of each half period alternately with the measurement in the same way as the measurement is processed to form output values. Successive output values can be stored serially in successive storage positions. Upon production of a new output value of the measurement or simulating quantity, the existing output values are stored in the next following storage position and evaluation takes place with the use of the contents of at least two storage positions. The flow meter comprises a first simulating signal generator (7) to produce a simulat- ing quantity, which is connected to one inlet of a change-over switch (8), the amplifier (5) being connected to the other inlet of the change-over switch (8) and the outlet of the change-over switch (8) being connected to the evaluating circuit (9). Fig. 1
607890
Hansen Henning Max
Voss Frands Wulff
Danfoss A/s
Macrae & Co.
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