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

Thomas Lederer, Nicolaus Mathies, Jürgen Rose, Dieter Stuck

Abstract

PTB’s 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 Reynold’s number achieves a value of 5.5 &middot; 10⁶. 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%.<BR /> This paper describes the test facility with particular consideration of the technical methods to achieve this high accuracy level.

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IMEKO-TC9-2003-049.pdf

DOI

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IMEKO TC

TC9 - Flow Measurement

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