Portable specific gravity instrument based on air pressure measurement and specific gravity measurement method

A technology of air pressure and measurement method, applied in the field of specific gravity meters, can solve the problems of measuring items that cannot be powdered, single type of specific gravity meters, etc., and achieves the effects of simple operation, convenient measurement and high measurement accuracy

Inactive Publication Date: 2019-06-07
JILIN UNIV
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Problems solved by technology

[0004] Since the existing hydrometers have high requirements for the items to be measured, the types of items that can

Method used

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  • Portable specific gravity instrument based on air pressure measurement and specific gravity measurement method
  • Portable specific gravity instrument based on air pressure measurement and specific gravity measurement method
  • Portable specific gravity instrument based on air pressure measurement and specific gravity measurement method

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Embodiment Construction

[0037] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0038] see figure 1 As shown, the present invention provides a portable hydrometer based on air pressure measurement,

[0039] Including the first sealed space 3, which is used to put the object to be measured, a gravity sensor 2 and an air release valve 1 are arranged in the first sealed space 3; the gravity sensor 2 is placed at the bottom of the first sealed space, in order to realize liquid For the measurement, a tray or a measuring cup can be set at the bottom of the first sealed space. The first sealed space has a sealing cover, which is sealed after the object to be measured is put in after opening.

[0040] The s...

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Abstract

The invention relates to a portable specific gravity instrument based on air pressure measurement and a specific gravity measurement method. The portable specific gravity instrument comprises a firstsealed space, a second sealed space, a temperature sensor, a pressure sensor and a controller, wherein the first sealed space is used for placing a measured object, and the first sealed space is internally provided with a gravity sensor and an air release valve; the connection between the second sealed space and the first sealed space is controlled by an electromagnetic valve, and the second sealed space is internally provided with an air pump so as to inflate the second sealed space; the temperature sensor is arranged in the second sealed space and used for measuring the temperature before and after the pressure intensity changes; the pressure sensor is arranged in the second sealed space and used for measuring the pressure intensity; and the controller is used for controlling the measurement time sequence, receiving the temperature, pressure intensity and gravity data and processing the data. The portable specific gravity instrument completes the accurate measurement of the density of solid and liquid substances to the greatest extent through measuring the pressure intensity change in the same sealed container and calculating the relevant formula, and completes the energy-saving,environment-friendly and non-loss efficient measurement.

Description

technical field [0001] The invention relates to the field of hydrometers, in particular to a portable hydrometer based on air pressure measurement and a specific gravity measurement method. Background technique [0002] With the exploration and research in recent years, my country has made great progress in density measurement, and has also made great breakthroughs on the basis of previous density measurement, and there are many types. At present, according to the physical properties of samples, density testers can be divided into the following categories: solid density testers for non-absorbent products, special density testers for water-absorbent solids, special density testers for powders, and precious metal purity specific gravity testers. The existing density meter has initially shown the digital trend of density measuring instruments, but its application field and scope of application are still very limited, and the measurement accuracy is not very high. [0003] From...

Claims

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Application Information

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IPC IPC(8): G01N9/00
Inventor 杜海龙吴芳怡程嘉鹏郝婉钰吕留北陈崧潮
Owner JILIN UNIV
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