 |
 |
Working group 1.52 |
||||||||||
| Liquid Test Facilities | ||||||||||
- Contact |
|
|||||||||
 Tasks |
||||||||||
|
Up to date in the field of fluid flow measurement the traceability by the measurands themselves (flowrate and flowing volume) is not given yet entirely. The realization of transportable, fluid independent working transfer standards with best reproducibility assures the traceability to the national standard (Hydrodynamic Test Field) and the uniformity in the whole field of fluid flow measurement. By means of these transfer standards the test stands of water-, oil- and food-industry as well as of all other users and customers could be chain to one and the same national standard for first time. Different flow measurement devices which are potential candidates for realizing this ambitious task are tested comprehensively at the Hydrodynamic Test Field and the other test facilities of the Liquid Flow Department for different liquids. These activities are part of a corresponding long-term research program. The experience and knowledge obtained from these experimental activities will be used to develop calculation methods for transferring results from one fluid to the other and to improve measuring devices and techniques in tight cooperation with the manufactures. Finally the determination of fluid flow values by such transfer standards should be realized with an expanded measurement uncertainty of 0.05 % - independent of the fluid used. In addition to this, the working group Transfer standards is in charge of the primary standard for the realization of small static liquid volumes in the range between 1 litre and 100 litres. The expanded uncertainty for those measurements is smaller than 0.004 %, the main application area is the calibration of standard measures and pipettes for local verification authorities and DKD test laboratories as well as other national and international metrology services. |
||||||||||
|
Contact |
||||||||||
|
||||||||||
| © Physikalisch-Technische
Bundesanstalt Erstellt am: 27.02.2004, letzte Änderung: 01.12.2010, Rainer Engel |
||||||||||