摘要
在盛有多相液体的密闭容器内放入一种多极板电容式液位传感器,不同相物质介电系数的相对差异将引起传感器输出电压值的变化,对传感器输出的相邻极板间的电压值进行规范化差分计算,可以精确确定密闭容器内的界面液位。这种传感器具有无移动部件、简单耐用、对温度及压力适应范围大和极少维护等优点,可以广泛应用于石油化工行业。
A multiple-electrode capacitive level transducer is immersed in a container with multi-component (liquid,) different output voltages corresponding to the permittivities of different materials can be produced. The output voltages from neighbouring electrodes can be normalized by difference calculation so that the interface (levels) in the container can be determined accurately. This transducer has advantage of no-moving parts, simple to use, long life time, wide temperature and pressure ranges and minimum maintenance,etc. It can be used in the oil and chemical industries.
出处
《传感器技术》
CSCD
北大核心
2003年第8期15-17,共3页
Journal of Transducer Technology
关键词
电容
多极板
多界面
液位传感器
差分计算
capacitance
multiple-electrode
multi-interface
level transducer
