A new type of pipeline type unmanned gas meter calibration system is designed to address the low effi-ciency and error prone issues of existing gas meter calibration devices.It realizes the integration of calibration items such as sealing,pressure loss,indication error,and additional device functions for gas meters,and automatic pipeline type calibration.This paper elaborates on the design process of an unmanned calibration system for assembly line gas meters,analyzes the workflow and data exchange of the unmanned calibration system.Practical results show that the system has high calibration efficiency,can simultaneously calibrate up to 48 gas meters,and can continuously operate unmanned for 24 hours.Gas meter calibration data is automatically transmitted,and original records and certificate reports are automat-ically generated.The total relative expansion uncertainty of the system(k=2)is not more than 0.5％,and the detection rate of non-conforming products is more than 99.99％.After production,it can verify at least 400,000 gas meters per year,which has significant economic and social benefits.
关键词
燃气表/无人检定系统/流水线/自动/设计
Key words
gas meter/unmanned verification system/assembly line/automatic/design
维普
万方数据