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In 1928, the German developed the first ultrasonic flowmeter and obtained a patent.  Ultrasonic flowmeter has a history of 75 years.In 1955, it was first applied to Marcussen flowmeter to measure aviation combustion oil, which is a liquid flowmeter composed of two groups of probes (transducers) based on acoustic circulation method.In 1958, a A.L.H-ERDRICH et al. invented the refractive probe. their research can further eliminate the phase distortion caused by the reverberation of the pipe wall, and also provide a theoretical basis for clamping outside the pipe.After entering the 1970s:Due...
发布时间: 2019 - 01 - 16
浏览次数:8
The 20th International Conference and Exhibition on Instruments was held ceremoniously in shanghai everbright convention from October 20 to 23, 2009.The scale of this exhibition is the largest in Asia, with a total exhibition area of about 23,000 square meters and more than 500 exhibitors from 21 countries and regions in the world.Guangzhou fangshi instrument co., ltd. brought new technology and new products to the grand entrance, which attracted great attention from the industry and won glory for the national instrument industry.In this exhibition, the Fang Shi instrument exhibition area is l...
发布时间: 2019 - 01 - 16
浏览次数:11
Dear old and new customers: Guangzhou fangshi industrial automatic control system co., ltd sincerely invites you to participate in SIAF2010 China Guangzhou international industrial automation technology and equipment exhibitionDetails of the exhibition (venue and date):Address: Pazhou Exhibition Hall, China Import and Export Fair, Xingang East Road, GuangzhouBooth Number: Booth A108, Hall 2.2Exhibition period: March 8-March 11, 2010Welcome to our booth, we are very looking forward to establishing a good long-term cooperative relationship with your company in the near future! Contact: Mr. Liu ...
发布时间: 2019 - 01 - 16
浏览次数:4
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