国产一区二区三区日韩精品,xxxxx非洲黑人猛内射,国产精品久久久久久av福利,久久精品国产清自在天天线

Home  /  News  /  Goldcard smart as the main drafting party helped with the release of the world's first NB-IoT diaphragm gas meter standards
Goldcard smart as the main drafting party helped with the release of the world's first NB-IoT diaphragm gas meter standards
Time:2018-11-21 17:37:44

Recently, the standard "Diaphragm gas meter with NB-IoT wireless remote-reading" was released by Zhejiang provincial brand building association. The standard was developed by Zhejiang institute of metrology, and Goldcard was one of the main drafting parties.


Drafted based on Chinese national standard GB/T 6968-6968, and take references from the most advanced and universallyrecognized European standard EN 1359:2017, it has been considered as the world's first NB - IoT diaphragm gas meter standard, meanwhile, reached the leading level in the international gas meter industry.As the first national single communication technology basedgas application standard, it has also opened a new situation for the standardization, rationalization and standardization of smart gas metering development.




1.jpg


After long term development and improvement, as well as tests and pilot run, Goldcard NB – IoT smart gas meter is completely comply with this standard in all aspects including technology, manufacturing, quality and service level etc.. In the future, Goldcard will continue to improve innovation and R&D. In the era of Internet of things, we will help gas companies to achieve breakthroughs in business upgrading and complete perfect transformation.



2.jpg


The standard "Diaphragm gas meter with NB-IoT wireless remote-reading" follows the EU standard, focusing on detailed terms on the measurement features, technical requirements, and test methods of NB - IoT diaphragm gas meter, it took reference from the terms of the EU standards and clearly defined the outline of the standard, meanwhile increased relevant requirement on the key component quality control, manufacturing capacity, service ability etc. of the NB - IoT diaphragm gas meter. Through indexes and data, this standard reflects the data transmission security issues, power consumption problems, network coverage problem and large volume of meters’ access and connection issues, that can be solved by adopting NB - IoT communication technology.。


 3.jpg


色国产精品一区在线观看| 欧美亚洲国产一区二区三区| 在线观看的av网站| 国产zzjjzzjj视频全免费| 韩国无码一区二区三区免费视频| 97精品国产手机| 国产av一区二区三区| 国产美女自慰在线观看| 亚洲国产精品va在线播放| 成熟了的熟妇毛茸茸| 久久人人爽人人人人片| 久久综合久久鬼色| 亚洲熟妇无码av另类vr影视| 精品国产乱码久久久久久1区2区| 亚洲男女一区二区三区| 亚洲色欲色欲综合网站| 国产成人无码a区精油按摩| 人妻少妇偷人精品无码| 久久精品欧美日韩精品| 日韩加勒比一本无码精品| 亚洲国产成人无码av在线| 一本大道东京热无码| 医院人妻闷声隔着帘子被中出 | 国产午夜精品久久久久免费视| 樱桃视频影视在线观看免费| 日韩精品久久久久久免费| 国产成人精品日本亚洲专区61 | 国产在线拍揄自揄拍无码| 俺去俺来也在线www色官网| 日本真人边吃奶边做爽动态图| 日韩精品人妻系列无码专区| 亚洲中文字幕无码av| 无码一区二区波多野结衣播放搜索| 日本在线 | 中文| 免费观看mv大片高清| 女人扒开屁股爽桶30分钟| 午夜不卡久久精品无码免费| 麻豆╳╳╳乱女另类| 最近日本中文字幕免费完整| 亚洲日韩亚洲另类激情文学| 中文字幕乱码人妻综合二区三区|