Comparison of two different asphalt flowmeters

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　　What types of flowmeters can be used to measure asphalt flow? Which one is the best? Asphalt has a certain viscosity, so it is important to choose a flowmeter that is resistant to clogging. Today, our manufacturer is comparing the VNSBL type target-type asphalt flow meter with the VNLC type planetary gear asphalt flow meter, in order to help users make a better choice when selecting an asphalt flow meter: 1. Differences in principle: The VNSBL type target-type asphalt flow meter works by the medium flowing through it exerting force on the target plate; this force causes the target plate to move, and the flow rate of the medium can be determined based on the magnitude of this displacement. Its accuracy is 1.0 grade. 　　The VNLC type elliptical gear asphalt flow meter belongs to the category of volumetric flow meters. It uses mechanical measuring elements to divide the fluid into consecutive, individual volumes of known size. The flow rate of the medium passing through is determined by the number of times these volume portions are filled and emptied in the measuring chamber, with an accuracy level of up to 0.5%. 　　II. Differences in connection methods: The VNSBL type target-type asphalt flow meter can be designed with flange connections, pipe segment connections, or insert-type connections; the appropriate connection method is chosen based on the diameter of the pipe. In contrast, the VNLC type planetary gear asphalt flow meter can only be used with pipe segment connections, and it is not recommended to use this type of flow meter for pipes with large diameters. 　　III. Differences in price: The VNSBL type target-type asphalt flow meter can be made of carbon steel or stainless steel, while the VNLC type asphalt flow meter can be made of cast iron, cast steel, or stainless steel. In terms of the price of stainless steel for these two types of flowmeters, the target flowmeter is much cheaper. 　　Due to the high temperature and high viscosity of the asphalt medium, protection against high temperatures and high viscosities is sometimes necessary, and both types of flowmeters can meet this requirement. 　　Flow metering is one of the components of metrological science and technology, and it is closely related to the national economy, national defense construction, and scientific research. Doing this job well plays an important role in ensuring product quality, improving production efficiency, and promoting the development of science and technology. Especially in today’s era of energy crises and increasing automation in industrial production, the significance and role of flow meters in the national economy have become even more evident.