电子式燃气表不同工作模式下示值误差的测试研究  

Test study on Indication Error of Electronic Gas Meter under Different Working Modes

作　　者：向磊 李杭 江航成 金岚[1,3] XIANG Lei;LI Hang;JIANG Hangcheng;JIN Lan(Zhejiang Institute of Metrology,Hangzhou 310018,China;Goldcard Smart Group Co.,Ltd.,Hangzhou 310018,China;Zhejiang Provincial Key Laboratory of Energy and Environmental Protection Metrology and Testing,Hangzhou 310018,China)

机构地区：[1]浙江省计量科学研究院,浙江杭州310018 [2]金卡智能集团股份有限公司,浙江杭州310018 [3]浙江省能源与环境保护计量检测重点实验室,浙江杭州310018

出　　处：《自动化仪表》2024年第11期19-23,29,共6页Process Automation Instrumentation

基　　金：浙江省科技厅基础公益研究计划基金资助项目(LGC20E060001)。

摘　　要：为保证使用电子式燃气表时燃气贸易结算的公平,对电子式燃气表在用户模式和检测模式下的示值误差测试方法进行了研究。从功耗设计角度分析了不同工作模式下示值误差存在差异的原因。分析了相关电子式燃气表标准的测试要求及目前常规测试装置和测试方法的不足,并提出一种新的量值传递方案。该方案能够在不改变测试装置以及被检表的软硬件基础上快速测试不同工作模式下的示值误差。按照该方案对6台JGM4S-G热式燃气表进行测试。测试结果表明,一致性达到99.94%。该结果验证了该方案的准确性。该方案的实施简单、方便,能够准确地完成用户模式下电子式燃气表的计量性能检测。To ensure the fairness of gas trade settlement when using electronic gas meters,the test methods for the indication error of electronic gas meters under user mode and detection mode are studied.The reasons for the differences in the indication errors under different working modes are analyzed from the perspective of power consumption design.The test requirements of the relevant electronic gas meter standards and the shortcomings of the current conventional test devices and test methods are analyzed,and a new scheme of value transmission is proposed.This scheme can quickly test the indication error under different working modes without changing the testing device and the hardware and software of the inspected meters.Six JGM4S-G thermal gas meters are tested according to the scheme.The test results show that the consistency reaches 99.94%.The result verifies the accuracy of the scheme.The scheme is simple and convenient to implement and can accurately complete the metering performance testing of electronic gas meters under user mode.

关 键 词：燃气表 超声波 用户模式 检测模式 示值误差 量值传递 

分 类 号：TH814[机械工程—仪器科学与技术]