Measuring apparatus
AssigneeElektriciteit Voor Goederenbehandeling Marine En Industrie in het verkort Egemin, naamloze vennootschap
InventorEduardus Stoffelen
Life of this patent
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Abstract
A measuring apparatus, including a measuring device; a measuring element secured at one of its ends to the measuring device; a measuring body secured on the free end of the measuring element; a pendulum capable of oscillating the measuring element; a positioning motor for actuating the measuring device; and a logic control unit actuating the pendulum.
Claims26
Measuring apparatus, comprising:
- a measuring device;
- a measuring element secured at a first end to said measuring device;
- a measuring body secured to a second free end of said measuring element;
- a pendulum means capable of modulating oscillations of said measuring element, said pendulum means being responsive to a tension in said measuring element induced by said measuring body;
- means for actuating said measuring device;
- means for actuating said pendulum;
- and
- means for interpreting the oscillations of said measuring element.
Measuring apparatus, comprising:
- a measuring device, said measuring device comprising a drum driven through a positioning motor;
- a measuring element, consisting of one flexible element, taken from the group consisting of a strand, a rope, a cable, and a tape;
- a measuring body secured on a free end of said measuring element;
- a pendulum means capable of oscillating said measuring element;
- means for actuating said pendulum means;
- and a means for interpreting oscillation of said measuring element;
- all of the above elements, except for said measuring body and a part of said measuring element, being located outside a vessel containing a material to be measured.
An apparatus for measuring physical properties of a fluid comprising:
- a strand, disposed vertically, having an upper end, a lower end, and a portion intermediate of said upper end and said lower end;
- means, mechanically coupled to said lower end of said strand and adapted to be immersed in said fluid, for applying a tension to said strand dependent at least in part on physical properties of said fluid;
- means, mechanically coupled to said upper end of said strand, for positioning vertically said tension applying means;
- and
- pendulum means, mechanically coupled to said intermediate portion of said strand, for horizontally displacing a part of said intermediate portion, and thereafter for oscillating with a frequency dependent on said tension applied to said strand.
A method of measuring characteristics of a fluid comprising the steps of:
- (a) submerging, into the fluid, a measuring body suspended from a measuring element capable of modulating the oscillation of a pendulum means in response to a force exerted on said measuring element by said measuring body;
- (b) sensing the oscillation frequency of said pendulum means;
- (c) adjusting the vertical position of said measuring body until the pendulum means oscillates at a predetermined frequency, said predetermined frequency corresponding to a predetermined vertical reference position;
- (d) determining the difference between the actual position of the measuring body and the predetermined reference position;
- and
- (e) calculating desired characteristics of the fluid, based upon said difference.
Dependencies are inferred from the claim text.