超声波流量计换能器参数的选择  

Selection of the Parameters for Transducer of Ultrasonic Flow Meter

作　　者：江杰[1] 罗长海[1] 

机构地区：[1]内蒙古科技大学信息工程学院,内蒙古包头014010

出　　处：《自动化仪表》2012年第10期76-79,共4页Process Automation Instrumentation

摘　　要：超声波换能器是超声波流量计的重要组成部分,它是利用超声波技术进行流量测量的关键,其参数选择直接影响到整个检测系统的性能和可靠度。针对外夹式超声波流量计不能准确地选取换能器的问题,基于时差法测量原理,分析了超声波在管道中的传播过程;进而通过分析计算获取换能器的发射频率、发射角度以及发射强度。根据计算得到的技术参数可以更加准确地选取超声波换能器。Ultrasonic transducer is the major component of the ultrasonic flow meter, it is the key of flow measurement using ultrasonic technology, and its parameters selection affects the performance and reliability of the whole detecting system. Due to transducer cannot be accurately selected for the clamp-on ultrasonic flow meter, on the basis of the measurement principle of time difference measurement, the spread process of the ultrasonic wave in the pipeline is analyzed, and further more, the emission frequency, angle and intensity are obtained by calculation and analysis. In accordance with the calculated technical parameters, the ultrasonic transducer can be selected more accurately.

关 键 词：超声波流量计换能器振荡频率发射角度发射强度TDC—GP2 

分 类 号：TP212.9[自动化与计算机技术—检测技术与自动化装置]