Densitometer and measurement method for measuring density of liquid

Abstract

The invention relates to a densitometer and a measurement method for measuring the density of a liquid. The densitometer comprises a marking body, a measuring body and a plurality of density scales, the outer wall of the marking body is provided with a liquid level graduation, the density scales are movably mounted on the outer wall of the marking body, a counterweight is contained in the measuring body, the lower end of the marking body is connected with the upper end of the measuring body, and the liquid level graduation and the density scales are respectively provided with volume scale values and density scale values. The measurement method includes the following steps: immersing the measuring body in a liquid to be measured, reading the reading value on the liquid level graduation, andreading the density value of the liquid to be measured on the density scales according to the obtained volume value. The densitometer and the measurement method are adopted to simplify the measuringprocess, so the densitometer has a large measuring range, and can be easily used by measuring personnel, influences of the external environment on the densitometer are reduced, the weight of the counterweight can be changed when necessary in order to meet different measuring demands, and the densitometer and the measurement method are flexible and fast to operate.

Description

technical field [0001] The invention relates to the technical field of measurement, in particular to a density meter and a measurement method for measuring liquid density. Background technique [0002] In the equipment manufacturing industry, people have designed and manufactured a variety of measuring instruments to measure various parameters of various mechanical parts. Among them, the measurement of fluid density has also been widely used in the manufacturing industry. Existing In technology, glass float gauges are generally used to measure the density of fluids. However, when the physical properties of the fluids are different, different glass float gauges need to be selected according to the actual measurement accuracy requirements. For example, to measure the density range of about 650kg / m 3 ~2000kg / m 3 When the liquid density is high, because the measurement range of different glass float gauges is very limited, that is, at least 39 glass float gauges are needed to ...

AI Technical Summary

Problems solved by technology

[0002] In the equipment manufacturing industry, people have designed and manufactured a variety of measuring instruments to measure various parameters of various mechanical parts. Among them, the measurement of fluid density has also been widely used in the manufacturing industry. Existing In technology, glass float gauges are generally used to measure the density of fluids. However, when the physical properties of the fluids are different, different glass float gauges need to be selected according to the actual measurement accuracy requirements. For example, to measure the density range of about 650kg / m 3 ~2000kg / m 3 When the liquid density is high, because the measurement range of different glass float gauges is very limited, that is, at least 39 glass float gauges are needed to measure accurately, although the division value of some glass float gauges on the market can reach 2 / 10,000 and Between five ten thousandths, but in actual work, first, this kind of high-precision glass float meter is not frequently used, and the working density meter commonly used in work has a division value of one thousandth, and the cost of use is It is very inconvenient to operate, and the second is that in order to achieve high precision, this high-precision glass float gauge often needs to make the division value very fine, which makes the measurement limit range of this high-precision glass float gauge very limited. , It is easy to exceed the measurement range during measurement, so it is necessary to use multiple glass floats for measurement to complete the corresponding measurement task, which is extremely inconvenient to operate. Third, the weight of the float is small when the glass float is used. Various forces from external environmental factors will affect the stable state of the glass buoy meter, such as wind flow, changes in liquid tension and ground vibration, etc., will cause the glass buoy meter to be subjected to partial loads. The buoyancy and gravity in the measured liquid cannot be balanced, which affects the accuracy of the reading

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