|本期目录/Table of Contents|

[1]李 杭,江航成,钭伟明,等.热式质量燃气表自动化校准技术研讨[J].工业仪表与自动化装置,2019,(02):93-95.[doi:1000-0682(2019)02-0000-00]
 LI Hang,JIANG Hangcheng,DOU Weiming,et al.Automatic calibration of thermal mass gas meter[J].Industrial Instrumentation & Automation,2019,(02):93-95.[doi:1000-0682(2019)02-0000-00]
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热式质量燃气表自动化校准技术研讨

《工业仪表与自动化装置》[ISSN:1000-0682/CN:61-1121/TH]

卷:
期数:
2019年02期
页码:
93-95
栏目:
出版日期:
2019-04-15

文章信息/Info

Title:
Automatic calibration of thermal mass gas meter
作者:
李 杭江航成钭伟明项 勇
金卡智能集团股份有限公司,杭州 310018
Author(s):
LI HangJIANG Hangcheng DOU WeimingXIANG Yong
GoldCard Smart Group CO.,LTD., Hangzhou 310018,China
关键词:
热式质量燃气表累积流量瞬时流量红外通信自动化校准
Keywords:
thermal mass gas meter cumulative flow rate instantaneous low rate infrared communication automatic calibration
分类号:
TB937
DOI:
1000-0682(2019)02-0000-00
文献标志码:
A
摘要:
利用热式传感器输出瞬时流量的计量特性,提出一种基于瞬时流量的校准方法,在热式表主板模块上加装红外发射及接收电路,通过红外通信方式与上位机建立数据交互,读取其显示的瞬时流量,以音速喷嘴法气体流量标准装置为标准器,通过下位机读取音速喷嘴处气体的瞬时流量,计算出示值误差。程序设置通信、初校、生成系数修正列表、写入系数、复校、判定一共6个工序,一键实现热式表连续化、批量化、自动化校准。通过用瞬时流量法测试G1.6规格燃气表0.5 m3/h流量点的示值误差,重复性为0.053%,与累积流量方法比较提高了0.05%,缩短校准时间87%,极大提升工作效率。
Abstract:
A calibration method based on instantaneous flow rate is proposed by utilizing the metrological performance of the output instantaneous flow rate for the thermal sensor.Infrared transmitting and receiving circuits are installed on the main board module of the thermal meter.The data are interacted with the host computer by means of infrared communication to read the instantaneous flow rate displayed by the thermal sensor.The calibration method is based on the sonic nozzle method.The instantaneous flow rate of the gas at the sonic nozzle is read by the lower computer and the indication error is calculated.Program settings communication,preliminary calibration,generating coefficient correction list, writing coefficient, recalibration, judgment a total of six procedures,one key to achieve continuous, batch, automatic calibration of the thermal meter.The instantaneous flow method was used to test the indication error of 0.5 m3/h flow point of G1.6 gas meter, and the repeatability was 0.053%.Compared with the cumulative flow method, it is improved by 0.05%.The calibration time is shortened by 87%, and the work efficiency is greatly improved.

参考文献/References:

[1] 赵会平,崔浩.膜式燃气表的温度补偿研究[J].科技与创新,2017(16):78-79.

[2] 重庆市质量技术监督局.JJG(渝)010—2017热式质量燃气表[S]北京:中国质检出版社,2017.
[3] 国家人民共和国工业和信息化部. JB/T 13567—2018热式质量燃气表[S].北京:中国标准出版社,2018.
[4] 国家质量监督检验检疫总局.JJG577—2012膜式燃气表[S]北京:中国质检出版社,2012.
[5] 马忠梅. ARM & L inux嵌入式系统教程[M].北京:北京航天航空大学出版社, 2004: 358- 375.
[6] 许继彦,杜钦生.红外通信模块的设计与实现[J].长春大学学报,2009,19(10):49-51.
[7] 江航成,张道隽,李杭.膜式燃气表回转体积测试及应用[J].自动化仪表,2017,38(10)(96-98+102.

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备注/Memo

备注/Memo:
收稿日期:2018-09-25
作者简介:李杭(1989),女,学士,工程师,主要从事流量仪表的测试研究工作。
更新日期/Last Update: 2019-04-15