Liquid density measurement device and measurement method

A liquid density and measuring device technology, which is applied in the direction of material analysis by measuring buoyancy, can solve the problems of low measurement accuracy, complex structure, poor stability, etc., and achieve the effect of low cost, small volume and stable performance

Inactive Publication Date: 2010-06-30
李彬
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Problems solved by technology

[0003] The purpose of the present invention is to provide a liquid density measurement device with simple structure, accurate measurement and suitable for dynamic or static automatic measurement in view of the existing technical problems of low measurement accuracy, poor stability and complex structure in existing automatic liquid density measuring instruments. Device and measurement method

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  • Liquid density measurement device and measurement method
  • Liquid density measurement device and measurement method

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Embodiment Construction

[0027] The liquid density measuring device is composed of hardware and software. The hardware part includes a force sensor 3, a control unit, a container 6, a float 1 installed in the container 6, a lever 2, a fulcrum cable 5 and a force-measuring cable 4; The force sensor 3 is located above the container 6 and is fixedly connected to the container 6. The force sensor 3 is a commercially available finished product, and the output end of the force sensor 3 is connected to the corresponding terminal of the control unit through a wire. The force-measuring guy wire 4 is arranged in the container 6, the upper end of the force-measuring guy wire 4 is fixedly connected with the force-measuring end of the force sensor 3, the lower end of the force-measuring guy wire 4 is fixedly connected with one end of the lever 2, and the other end of the lever 2 is connected with the float 1 Fixedly connected; the upper end of the fulcrum stay wire 5 is fixedly connected with the middle part of the...

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Abstract

The invention relates to a liquid density measurement device and a measurement method. A floater, a lever, a fulcrum bracing wire and a force-measuring bracing wire are arranged in a container, and the floater is connected on one end of the lever. One end of the fulcrum bracing wire is fixedly connected with a lever fulcrum, and the other end is fixed on a fixed point in the container under the lever. One end of the force-measuring bracing wire is fixedly connected with the force-measuring end of a force value sensor, and the other end is fixedly connected with the lever. The electric signal of the force value sensor is amplified, filtrated and converted by A / D and then is processed by a single chip, and the measurement result is showed on a display. The liquid density measurement device has the advantages of simple structure and accurate measurement, and is suitable for dynamic or static automatic measurement of liquid density.

Description

technical field [0001] The invention relates to a density measuring device and a measuring method, in particular to a device and a measuring method for measuring liquid density quickly and accurately by applying the principle of Archimedes buoyancy. Background technique [0002] At present, a variety of principles and methods can be used to measure the density of liquids, such as the buoyancy method using Archimedes' buoyancy law, the resonance tube method using tube vibration theory, and the relationship between the propagation speed and density of ultrasonic waves in liquids of different densities Ultrasonic method, etc. There are many kinds of instruments, such as float type density meter, resonant cylinder type liquid density meter, ultrasonic liquid density meter and so on. However, the indication error of most of the above-mentioned instruments is difficult to meet the accuracy requirement of ±0.002%, which limits its application in some occasions that require high-ac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N9/08
Inventor 李彬
Owner 李彬
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