高精度气介式超声波液位计研制  

The development of high precision air-coupled ultrasonic level meter

作　　者：刘艳平[1] 安保庆[1] 赵舒迪[1] 刘冠军[1] 汤祥林[1] 

机构地区：[1]国网电力科学研究院/南京南瑞集团公司,江苏省南京市210003

出　　处：《水电自动化与大坝监测》2013年第4期27-29,共3页HYDROPOWER AUTOMATION AND DAM MONITORING

摘　　要：本文阐述了气介式超声波液位计的测量原理;分析了影响气介式超声波液位计测量精度的最大因素——声速测量;提出了新的声速校正的方法;介绍了仪器的构成;实验证明基于此方法研制的气介式超声波液位计精度优于普通气介式超声波液位计。Explain the measuring principle of air-coupled ultrasonic level meter;Analyze the biggest impactive factor which influences air-coupled ultrasonic level meter's measurement accuracy;It is due to the accuracy of acoustic velocity measurement;Presents a method to improve the measurement accuracy of acoustic velocity;And introduce the structure of instrument;The experiment proves that the accuracy of this instrument based on the method mentioned is better than the ordinary air-coupled ultrasonic level meter;

关 键 词：气介式超声波液位计 声速测量 高精度 方法 

分 类 号：P335[天文地球—水文科学]