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


高清无码视频直接看| 中文字幕亚洲无线码一区女同| 中文字幕一区日韩精品| 日日噜狠狠噜天天噜av| 狼人无码精华av午夜精品| 国产高潮国产高潮久久久| 狠狠色噜噜狠狠亚洲av| 免费a级毛片高清在钱| 亚洲av永久无码精品国产精品| аⅴ资源中文在线天堂| 欧美国产综合欧美视频| 国产又猛又黄又爽| 精品久久久久久久免费人妻| 中文字幕亚洲一区二区va在线| 三年片在线观看免费观看大全中国 | 亚洲成av人综合在线观看| a级无遮挡超级高清-在线观看 | 成人av无码一区二区三区| 曰批免费视频播放免费| 亚洲精品乱码久久久久久蜜桃不卡| 老妇肥熟凸凹丰满刺激| 男人激烈吮乳吃奶视频免费| 在线播放免费人成毛片乱码| 亚洲日韩精品欧美一区二区| 亚洲经典千人经典日产| 最近免费中文字幕大全高清10| 97午夜理论片在线影院| 国产草草影院ccyycom| 国产午夜精品一区二区三区软件 | 99久久精品免费看国产| 欧美极品少妇性运交| 中文字幕亚洲无线码在线一区| 亚洲a∨国产av综合av下载| 亚洲爆乳无码一区二区三区| 男人扒开添女人下部免费视频| 欧美性巨大╳╳╳╳╳高跟鞋| 欧美精品videosex极品| 国产内射合集颜射| 边啃奶头边躁狠狠躁| 亚洲精品无码高潮喷水在线| 午夜精品久久久久久久无码|