The Development and Application of Direct Mass Flow Meter in my country

Because the mass flowmeter has obvious advantages, it has been widely used in the industrial field of our country. At present, in my country's imported instruments, direct mass flow meters occupy a large proportion. Specifically, the number of installations of small-caliber gas mass flowmeters is relatively large, and they are generally used in petrochemical and chemical test devices, and they are also widely used in pharmaceutical, food and other production departments. Correspondingly, gas mass flowmeters with larger calibers are mainly used in the dosing process of natural gas and coal gas. Although there are not many in number, they have good prospects. In recent years, gas mass flowmeters with small and medium calibers have maintained a rapid development speed in my country. Taking 2000 as an example, a total of about 3,000 gas mass flowmeters were installed in my country, among which more than 2,000 gas mass flowmeters were produced domestically, while imported products were mainly produced by companies such as Brooks and EPI. Due to the constraints of calibration devices, there are relatively few manufacturers of large-caliber gas mass flowmeters in my country, resulting in a large proportion of imports of such products, but it has shown a downward trend in recent years. For liquid mass flowmeters, because the technology is complex, the benefit period is long, and the progress is relatively slow. Although many scientific research departments have carried out the research and development work of this product, the manufacturer has not scaled up yet, and the output is limited. However, with the continuous increase in the demand for this product, the production capacity of domestic manufacturers has also increased, and the number of domestic products has also increased significantly. At present, liquid mass flowmeters are widely used in the measurement and control of petrochemical, building materials and other fields in my country. As for liquid mass flowmeters, due to the broad application prospects, it is necessary to strengthen the development and research of domestic liquid mass flowmeters. Although this production technology is relatively difficult, in recent years, my country has made great technological breakthroughs in the production of liquid mass flowmeters, and domestic products have caught up with advanced products in terms of performance and technical indicators. At the same time, in terms of the comprehensive performance of batch products, the gap between domestic and foreign countries is mainly reflected in the following points: first, the lack of consistency in the performance of raw materials, for example, in the Cortesian force flowmeter, there are differences in the performance requirements of domestic raw materials; secondly It means that the level of production automation in China is relatively low; finally, for measuring workers with a caliber above 150mm, the processing technology is relatively backward and cannot provide products.

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