气相传递差压法液位测量应用的几个问题

Some Problems of Determining Liquid Level with Gaseous Transmission Differential Pressure

讨论在气相传递差压法测量液位中正确使用汉普逊液位计的几个问题．根据汉普逊液位计的工作原理，在安装和使用液位计时，必须保证气相信号传递条件．因此要注意保持测量基点的稳定，加装有伴热的汽化器和采用三阀组．

Some problems of using Hampson level gauge in determination of liquid level with gaseous transmission differential pressure were discussed. According to the working principle of Hampson level gauge, as it is installed and used, gaseous phase must be ensured for transmitting signal condition. Thus, it is necessary to maintain stable base point in determination, to install gasifier with heating apparatus and to apply triplet valves.