DIN CEN/TR 17078 DIN SPEC 33978:2017-10

This Technical Report provides supporting guidance on the application of DIN EN ISO 16911 1. It has been produced in response to the request from Member State mirror committees for clarification on elements of DIN EN ISO 16911 1 and on how certain requirements specified within it should be interpreted. DIN EN ISO 16911 1 has been written to apply to a range of applications with different uncertainty requirements. This CEN Technical Report makes recommendations in regards to which requirements and performance characteristics apply to specified measurement objective(s) and application area(s) in order to achieve a consistent application of DIN EN ISO 16911 1. This Technical Report does not provide guidance on the application of DIN EN ISO 16911 2. DIN EN ISO 16911 1 describes a method which uses point measurements of the flow velocity to determine the flow profile and mean and volumetric flows. It also provides for alternative methods based on tracer gas injection, which may be used to provide routine calibration for automated flow-monitoring systems.