The oil densitometer is an instrument that measures the liquid density at the fastest speed. It can accurately measure the temperature of the sample during the measurement process and has the ability to control the temperature of the sample. It is widely used in many fields. Today Xiaobian mainly introduces the definition and measurement principle of the petroleum densitometer, hoping to help users better apply the product.

Oil density meter definition

At a specified temperature, the mass of a substance per unit volume is called the density of the substance, expressed in kg/m3 or cm3. As the volume of a petroleum product changes with temperature, its density also changes with temperature, and the densitometer reading observed at a certain temperature is called the apparent density of the substance. Therefore, be sure to specify the temperature T when measuring the density of petroleum products. The density of petroleum and petroleum products at standard temperatures (20°C and 101.325 kpa) is called standard density. The apparent density values ​​measured at other temperatures shall be converted to standard densities and reported as test results.

Oil Density Meter Measurement Principle

Densitometry is the measurement of density based on Archimedes' law. With the sample at a temperature, pour it into a density metering cylinder of approximately the same temperature, and place the appropriate densitometer in the sample at the adjusted temperature.

According to Archimede law, when the weight of liquid discharged by the density meter is equal to the weight of the densitometer itself, that is, when the buoyancy of the densitometer is equal to the gravity acting on it, the densitometer floats in the petroleum product. Balanced state. When the temperature reaches equilibrium, the densitometer reading and sample temperature are read. The observed densimeter readings were converted to standard densities using an oil meter.