外测液位开关在储罐上的应用

Application of External Liquid Level Switch on Storage Tank

液位监控及联锁是石化企业安全生产中的重要环节,液位能否被准确监控,联锁动作是否可靠直接取决于液位开关的性能好坏。简要叙述了几种常见液位开关的工作原理及优、缺点,通过几种液位开关的比对,可作为用户根据自身工业现场情况选用合适液位开关的参考。详细论述了外测液位开关的工作原理、性能特点、安装调试及使用情况,并结合工业现场情况介绍了安装方法、液位控制和联锁应用。

Liquid level monitoring and interlocking is of great importance in petrochemical enterprise safe production. Whether liquid level can be accurately monitored and interlock action is reliable directly depend on performance of liquid level switch. Working principle and advantages and disadvantages of several common liquid level switch are briefly described. Several kinds of liquid level switch are compared. It can be used as reference for client to choose suitable liquid level switch according to their own situation. Working principle, performance characteristics, installation and debugging and usage are discussed in detail. Installation method, liquid level control and interlock application are introduced with combining industrial field situation.