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US 4,793,191 AGranted
Mass flow meter operating by the cariolis principle
AssigneeFlowtec AG
InventorsPeter Flecken, Niels Abildgaard
Life of this patent
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AssigneeFlowtec AG
InventorsPeter Flecken, Niels Abildgaard
Estimating the term…
A mass flow meter operating by the Coriolis principle includes a mechanical oscillating system having two straight measuring tubes which are clamped at both ends. In the center of the measuring tubes an oscillation exciter is disposed which sets the two measuring tubes into oppositely phased flexural oscillations. The mechanical oscillations are sensed by oscillation sensors which are arranged at equal distances on both sides of the oscillation exciter. The phase displacement of the sensed oscillations is a measure of the mass flow. The mechanical oscillating system is arranged axially in a support tube. For decoupling the mechanical oscillations from the support tube the mechanical oscillating system is freely suspended in the support tube at each end by an annular diaphragm. The entire mechanical oscillating system including the diaphragms preferably consists of titanium.
Coriolis type mass flow meter comprising a support tube, a mechanical oscillation system disposed axially in the support tube and comprising at least one straight measuring tube, an oscillation exciter which sets the center of said at least one straight measuring tube in flexural oscillations, and oscillation sensors for sensing the mechanical oscillations at equal distances from the center on both sides of the oscillation exciter, and plural continuously arcuate diaphragm means each having an inner end connected to one end of the straight measuring tube and an outer end clamped to the support tube for providing the sole support for the straight measuring tube.
Dependencies are inferred from the claim text.