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principle
Earth's gravity pulls the object toward the ground, but if the object is placed in a liquid, buoyancy will exert a counter-force on it. The size of the buoyancy is equivalent to the gravity of the liquid from which the object is discharged.
The densitometer floats or sinks according to changes in gravity and buoyancy balance.
Densitometer A well-functioning densitometer can only be in a floating state, so the force of buoyancy pushing up is slightly larger than the force of gravity pulling down. But in equilibrium, the amount of gravity it receives is equal to buoyancy.
Since the volume of the densitometer does not change, the volume of the discharged water is the same. However, it becomes heavier because it contains more water. When gravity is greater than buoyancy, the densitometer will sink. The weight of the densitometer is less than the weight of the same volume of water, so the densitometer re-floats.
The densitometer reads from the top to the bottom. When it is immersed in a different liquid, the volume does not change. The iron sand or lead particles at the bottom of the densitometer are used to maintain balance.
A physical property analyzer for measuring fluid density. A hydrometer similar to it is an instrument that measures the specific gravity of a fluid. Density is the mass of a substance per unit volume; specific gravity is the density ratio of liquid or solid to water or gas and air at a specified temperature and pressure. The density of water and air at a certain temperature and pressure is known, and therefore, the specific gravity and density under the specified conditions are interchangeable. The density or specific gravity of a substance is related to the composition of the substance, so densitometers and hydrometers are commonly used to detect qualities such as alcohol, petroleum products, acid-base solutions, gas and natural gas. Densitometers can also be used for monitoring and control of the production and processing of such products.
classification
Densitometers can be divided into benchtop densitometers and portable densitometers, depending on the application of the densitometer.
Densitometers can be classified into solid density meters, liquid density meters, and gas density meters depending on the type of material being measured.
According to different working principles, the density meter can be divided into static pressure type, vibration type, float type and radioisotope type.
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