远程微小气体流量监测系统的研究

Research of a Long Distance Monitoring System of Little Flow of Gas

本文介绍了远程微小气体流量监测系统的设计方法。系统由一台监控仪表和 5 0台浮子流量计组成 ,系统设计符合RS -485标准 ,实际通讯距离 1 2 0 0米。浮子流量计通过使用钟罩式气体流量检定装置实流检定 ,测量误差小于± 2 .5 %。

This paper introduces a long distance monitoring system of little gas flow. The system is consisted of a monitoring meter and 50 rotatometers, and it can communicate in a distance of 1200 meters. The design accords with the standard of RS-485. The measurement accuracy of rotameter is up to ±2.5%.