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

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...

AI Technical Summary

Problems solved by technology

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

For example, a liquid hydrometer cannot measure powdery items

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