超声波流量计在天然气计量中的故障诊断研究

针对超声波流量计在川气东送管道天然气计量中的应用，通过分析超声波流量计的工作原理，结合现场应用，对常见的超声波流量计故障及计量误差问题进行总结，指出在超声波流量计应用中应注意的维护工作要点，从而降低超声波流量计的测量误差，保证贸易计量的公平公正性。

How to establish a measurement management system closely related to quality,safety, environmental protection and energy saving

The purpose of product manufacturing is continuously meet the requirements for the customer, improve the customer satisfaction, the customer needs through monitoring and measuring to prove the conformity degree, meantime during the production process will produce dangerous damage, environmental pollution and energy consumption, which depends on the measuring equipment to monitor. How to establish different professional management and measuring equipment management requirements are closely related and support each other, at the same time measurement management system can promote the measurement process is stable and reliable。