Thread Content
Currently, mass flow meters account for a significant proportion of the imported instruments in our country. Specifically, small-diameter gas mass flow meters are installed in relatively large numbers; they are generally used in testing facilities in the petrochemical and chemical industries. They are also widely utilized in manufacturing sectors such as pharmaceuticals and food production. Although their quantity is not large, they hold good prospects for future use. In recent years, gas mass flow meters of small and medium caliber have seen rapid development in China. At present, over half of the mass flow meters installed in our country are manufactured domestically, while imported products are mainly those from companies such as Brooks and EPI. Due to the limitations imposed by calibration devices, there are relatively few manufacturers in China that produce large-diameter gas mass flow meters, which results in a high proportion of imports for such products; however, this trend has been declining in recent years. As for liquid mass flow meters, they are complex in technology, have a long payback period, and progress relatively slowly. Although many research institutions have worked on developing this product, the manufacturers have not yet scaled up production, and the output remains limited. However, as the demand for this product continues to rise, the production capacity of domestic manufacturers has also increased, leading to a significant rise in the amount produced domestically. At present, liquid mass flow meters are widely used in measurement and control in fields such as petrochemicals and building materials in our country. However, in terms of the overall performance of mass-produced products, the gap between domestic and foreign products is mainly reflected in the following aspects: firstly, there is a lack of consistency in the properties of raw materials; for example, with Coriolis flowmeters, the performance requirements of domestic raw materials vary. Secondly, the level of production automation in China is relatively low. For liquid mass flow meters, given their broad application prospects, it is necessary to intensify the development of domestic liquid mass flow meters. Although this production technology presents considerable challenges, in recent years China has made significant technological advances in the manufacture of liquid mass flow meters; domestic products now match the performance and technical specifications of advanced foreign products.