Flow measuring

Flow measurements for diesel injectors under a pressure drop of 0.6 bar. 

Flow measurements using tracers are performed in all piping systems carrying oil, gas or water including separators, compressors, injector systems, and flares. Calibration of elsewhere difficult accessible flow meters is regularly performed by the tracer methods, which are based on international standards. Tracer flow measurements are also well suited for special purposes... 

Figure 1 Tracer flow measurements using the time of transit method...

Figure 2. Principle of 3 phase flow measurements by the continuous dilution tracer method.

T. Sevel, NH. Pedersen, C.E. Weinell, B. Lind-Nielsen, North Sea Flow Measurements Workshop, 1996, Peebles, Scotland... 

The latter contribute to the fluxes in time-varying conditions and provide source or sink terms in the presence of chemical reaction, but they have no influence on steady state diffusion or flow measurements in a non-reactive sys cem. 

Flowers of zinc Flow improvers Flow injection analysis Flow measurement... 

A number of considerations should be evaluated before a flow measurement method can be selected for any appHcation. These considerations can be divided into four general classifications fluid properties ambient environment measurement requirements and economics. 

Flow measuring equipment must generally be wet caHbrated to attain maximum accuracy, and principal flow meter manufacturers maintain extensive facihties for this purpose. In addition, a number of governments, universities, and large flow meter users maintain flow laboratories. 

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