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


伊人久久综合精品无码av专区| 国产一区二区三区小说| 日日噜噜噜夜夜爽爽狠狠视频| 97在线观看| 成人免费无遮挡在线播放 | 亚洲av无码精品国产成人 | 精品人妻少妇一区二区三区| 国产精品扒开腿做爽爽爽视频| 国语自产偷拍精品视频偷拍| 欧美成人精品一区二区综合| 久久久噜噜噜久久中文字幕色伊伊| 在线观看午夜亚洲一区| 67194熟妇人妻欧美日韩| 亚洲欧美日韩高清一区| 亚洲国产精品一区二区久久| 狠狠躁日日躁夜夜躁2022麻豆| 国产产区一二三产区区别在线 | 97人人模人人爽人人少妇| 肥臀浪妇太爽了快点再快点| 中文字幕日韩精品有码视频 | 中文乱码人妻系列一区二区| 亚洲av无码精品色午夜果冻不卡| 国产产区一二三产区区别在线| 欧美浓毛大泬视频| 男女后式激烈动态图片| 男人添女人下部高潮全视频| 美女mm131爽爽爽| 久久精品国产亚洲av大全| 亚洲最大av网站在线观看| 东北老女人高潮大叫对白| 精品人妻系列无码人妻免费视频| 亚洲人成无码网站久久99热国产| 欧美粗大无套gay| 精品国产sm捆绑最大网免费站| 妓女爽爽爽爽爽妓女8888| av午夜久久蜜桃传媒软件| 国产av无码专区亚洲精品| 少妇的丰满3中文字幕| 蜜臀aⅴ国产精品久久久国产老师 一本色道久久88—综合亚洲精品 每日更新在线观看av | 精品无码一区二区三区爱欲 | 18无码粉嫩小泬无套在线观看|