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Title: New Test Facility For Large Water Flowrates Up To 1000 m3/h In A Temperature Range Between 3 C And 90 C At Ptb - Berlin
Author: Thomas Lederer,, Nicolaus Mathies, Jrgen Rose, Dieter Stuck
Source: Flomeko 2003
Year Published: 2003
Abstract: PTBs Thermal Energy Measurement Section built up a new gravimetric test facility, serving as the national primary standard for volume flowrates of water from 3 m3/h to 1000 m3/h and temperatures between 3 C and 90 C. The maximum Reynolds number achieves a value of 5.5106 .The test facility can be operated in four different modes to generate the water flow and comprises two independent weighing procedures, to obtain highly-valuable measurement results with an expanded combined uncertainty of 0.04%. This paper describes the test facility with particular consideration of the technical methods to achieve this high accuracy level.

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