What flowmeter is used to measure glycerol?

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　　When measuring the flow rate of glycerol liquid, commonly used flow meters include mass flow meters and volume flow meters. The selection of a suitable flowmeter depends on specific application requirements and fluid properties. The following are introductions and applicable scenarios of two types of flow meters:

　　1. Mass flow meter:

　　A mass flow meter determines the flow rate by measuring the mass change of the fluid passing through the flow meter. The commonly used mass flow meters include thermal mass flow meters and vibratory mass flow meters.

　　-Thermal mass flowmeter: measures the energy carried away by the heat on the surface of the sensor when the fluid passes through it to calculate the fluid mass flow rate. Suitable for low flow rate and high viscosity liquids, such as glycerol.

　　-Vibration type mass flowmeter: calculates fluid mass flow by measuring the frequency change of the sensor when the fluid passes through the pipeline. Suitable for liquids with medium to high flow rates and low viscosity.

　　2. Volume flowmeter:

　　A volumetric flowmeter determines the flow rate by measuring the volume change of a fluid passing through the flowmeter. The commonly used volumetric flow meters include vortex street flow meters and liquid turbine flow meters.

　　-Vortex flowmeter: calculates the fluid volume flow rate by measuring the frequency change of the vortex caused by the fluid passing through the flowmeter. Suitable for liquids with low to medium flow rates and medium to high viscosity.

　　-Liquid turbine flowmeter: calculates the fluid volume flow rate by measuring the rotation of the liquid turbine when the fluid passes through the flowmeter. Suitable for liquids with medium to high flow rates and low viscosity.

　　When measuring the flow rate of glycerol liquid, a mass flowmeter or a volume flowmeter can be selected, depending on factors such as fluid flow rate, viscosity, application requirements, and price. In practical applications, factors such as reliability, accuracy, and cost of flow meters need to be considered to ensure the accuracy and economy of measurement results.