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Title: Views On In-Service Inspection Of Ultrasonic Flow Meter
Author: ByMinWei,Liwanjun,Zhoufang
Source: Flomeko 2010
Year Published: 2010
Abstract: The verification limit of gas ultrasonic flowmeter is two years according to Chinas verification regulation. However, the limit may be extended to six years if the real flow and annual in-service inspection on ultrasonic flowmeter are qualified through verification. In China, in-service inspection on gas ultrasonic flowmeter is initiated as an emerging field. Currently, two approaches are available: first, comparing it with one set of standard flow meter and second, on-line inspection based on sound velocity comparison method. Both of the approaches have pros and cons




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