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Abstract
A measurement system was developed to study the small scale liquid distribution in a trickle bed reactor. The system can measure the radial profile of liquid flow rate quasi-simultaneously with a rectilinear array of 29 measuring cells with 10×10 mm2 area, or the liquid flow rate with a single cell dynamically. The liquid flow rate in each cell was determined according to an electric conductivity method. A carefully devised system of calibration guarantees the standard deviation of measurement below 2%.