00000nam 2200000zi 4500 9.904027 CaOODSP 20221107180428 m o d f cr |n||||||||| 211012e198507##oncd ob f000 0 eng d CaOODSP eng rda CaOODSP eng eng fre En36-539/25-1985E-PDF Engel, Peter, 1938- author. Calibration of current meters for turbine efficiency tests / by Peter Engel. Burlington, Ontario : Environment Canada, National Water Research Institute = Environnement Canada, Institut national de recherche sur les eaux, July 1985. 1 online resource (iv, 33 pages, 62 unnumbered pages) : charts. text txt rdacontent computer c rdamedia online resource cr rdacarrier [Unpublished manuscript] Digitized edition from print [produced by Environment and Climate Change Canada]. Includes bibliographical references (page 33). "At the request of Hydro-Quebec Engineers, calibrations were provided for 30 SIAP ME 4001 current meters. Investigations of sources of uncertainties in the calibrations revealed that there maybe a small systematic error due to the Epper Effect, a small random error due to towing speed variability and a significant error as a result of using proeller No. 1 which is not applicable for speeds greater than 500 cm/s. Theoretical analyses and tests indicated that satisfactory calibrations could be produced by towing three meters at a time and using 48 data pairs to determine the calibration equations. Tests conducted to determine the effect of replacing lubricating oil in the meter's bearing chambers with water showed that this procedure did not significantly change the calibrations for speeds greater than 50 cm/s"--Summary. Includes abstracts in French. Turbines. Flow meters Calibration. Turbines. Débitmètres Étalonnage. National Water Research Institute (Canada), issuing body. Unpublished manuscript (National Water Research Institute (Canada)) (CaOODSP)9.901451 PDF 2.43 MB https://publications.gc.ca/collections/collection_2021/eccc/en36-539/En36-539-25-1985-eng.pdf