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E1954X14

REPORT TITLE

Testing of 20 inch Flow Meters for Water Application

ABSTRACT

A series of installation effect tests was carried out on four NIVUS flow meters. The flow meters were an 8-path inline ultrasonic meter (USM), a 4-path inline USM, an electromagnetic meter (EM) and a clamp-on USM. All flow meters were nominally 20-inch in diameter or in the case of the clamp-on USM installed on a 20-inch pipe. A test program was devised to simulate in-service installations and to evaluate the performance of the flow meters under these conditions. A metering package was constructed consisting of all four meters. This entire metering package was installed into two different installations types; straight length and U-shape pipe work. Different disturbances were installed upstream of the metering package and the meters. To give an indication of the performance of each meter, the manufacturer’s claimed uncertainty at a mid point flow rate of 100 l/s was determined. This value was compared with the result at the set flow rate value. A table for this assessment was produced which indicated if the meter was within or not within the manufacturer’s claimed uncertainty value at this condition.

PUBLICATION DATE

2014

REPORT TYPE

INDEX CLASSIFICATION

3.4 - Ultrasonic flowmeters

MANUFACTURER

NIVUS GmbH

COUNTRY

Germany

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