| Ultrasonic water meter transducer characteristics reflect the importance of its comprehensive performance of the important content.In this regard,this study mainly through the experimental study and theoretical review method,the theory of practice,the use of full performance test technology device,the development of ultrasonic water meter transducer characteristics.The work done in this study is as follows:(1)Based on the accurate definition of the concept,structure and working principle of ultrasonic water meter transducers,the overall technical scheme of this study was determined by tracking the research trends of ultrasonic water meter transducers at the present stage.(2)Based on the research progress and technology development of ultrasonic water meter transducers,the energy conversion mechanism and the energy conversion material,the vibration mode,the working medium and the working state are classified respectively,and the ultrasonic water meter Shell,piezoelectric components,backing on sound absorption and other components of the structural characteristics.On this basis,clarify the ultrasonic water meter transducer specific working principle.(3)ultrasonic water meter transducer characteristics and technical indicators evaluation.(4)ultrasonic water meter transducer performance test.The experimental results show that when the ultrasonic water meter transducer is in steady state,static and temperature environment of the same medium conditions and when the ambient temperature is 10℃,the actual frequency of change in the frequency of the general<1%;when the ultrasonic water table change When the flow rate is 0.05 m/s,the repeatability of the propagation time difference is kept within 1%.In addition,from the overall test evaluation results,the ultrasonic water meter transducer in about78% of the humidity conditions are still able to meet its sealing design requirements of normal work.And when the ultrasonic water meter transducer fluid is in a quiescent state,its propagation time difference stability indirectly reflects the machine’s "zero drift" characteristics.Therefore,for poor stability of the ultrasonic water meter transducer,should not be installed. |