National major scientific instruments and equipment development "Wide range of ultra-high precision current measuring instrument" by the China Institute of Meteorology and other 5-year in-depth study, has finally made a series of technological breakthroughs. On March 29, from the China Institute of Metrology (hereinafter referred to as "China Metrology Institute") was informed that the researchers at the hospital for the first time in the world "sampling resistance load factor self-calibration and test methods" to achieve the resistance load factor Accurate measurement, the uncertainty of 10-8 order of magnitude. This has fundamentally solved the bottleneck that restricts the development of precision current measurement technology in our country for a long time, and has enhanced the capability of current measurement in China. The main technical backbone of the project, researcher Li Zhengkun of the Electromagnetism Institute of China Metrology Institute said that electromagnetic measurement plays an important role in modern measurement technology and has been widely used in basic scientific research, social production and daily life. The current as an international system of seven basic one, is the core of electromagnetic measurement and foundation. In order to break through the bottleneck of current precision measurement technology and change the unfavorable situation that the high-end precision current measurement instrument in China is monopolized by foreign products, the "Wide Range Ultra-high Precision Current Measurement Instrument" developed by China National Metrology Institute for major scientific instruments and equipment Under the leadership of academician Zhang Zhonghua, in collaboration with nine domestic research institutes, universities and enterprises, the key technologies of precision current measurement, such as low load factor sampling resistance, have been studied in depth. After 5 years research, made a series of technological breakthroughs. Li Zhengkun introduced through the collaboration of the various tasks of the project, the project team also developed a variety of prototypes and key devices based on precision current measurement technology. Some of the equipment has been applied in scientific research institutes and enterprises in fields such as national defense measurement, new energy vehicles, medical diagnosis, metallurgy and chemical industry, and has promoted the overall improvement of the technical level and innovation ability of the related industries in our country. Diamond Grinding Plate,High Efficient Diamond Grinding Plate,Different Types Diamond Grinding Plate,Diamond Concrete Grinding Plate Henan Huanghe Whirlwind International Co., Ltd. , https://www.huangheindustry.com