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一、引言恒温热线流量计是一种测量煤气或其他流体的流量和流速的新型半导体集成化仪表。煤气流量计量在煤气生产、输配和经济管理方面一直是个急需解决的问题,特别是大流量的计量,至今在国内还没有得到很好的解决。随着煤气事业的发展和四个现代化的需要,研制适应范围大、性能稳定、精度高、响应快、灵敏度高、安装维护方便的流量计的任务就显得越来越迫切。
I. INTRODUCTION Constant-temperature hot-wire flowmeters are a new class of semiconductor integrated instruments that measure the flow and flow rates of gas or other fluids. Gas flow metering has always been an urgent problem to be solved in gas production, distribution, and economic management. In particular, large-volume flow measurement has not yet been well resolved in China. With the development of the gas industry and the need for four modernizations, the task of developing a flow meter with a large range of applications, stable performance, high accuracy, fast response, high sensitivity, and easy installation and maintenance becomes more and more urgent.