A new Expression for the Uncertainty of a Current Meter Discharge Measurement

Abstract

A method for the conduction of routine current meter discharge measurements practised in Denmark and Norway is described. Contrary to traditional methods (ISO-recommendations) it incorporates information about the geometry of the stream profile in question into the choice of measurement layout. An associated method for calculation of the measurement uncertainty is developed. By tentative application to a testset of mesaurements it is rendered probable that the developed method will be able to provide satisfactory estimates of the uncertainty of current meter measurements while at the same time having a wider applicability and being easier to use than existing methods.