INTERLABORATORY COMPARATIVE MEASUREMENTS OF GAS VELOCITY AND CONCENTRATION OF SOLID PARTICLES IN THE WASTE GAS

摘要

The device for measuring the gas velocity, volume flowrate of gas streams in ducts and mass concentration of solid particles in the waste air for interlaboratory comparative measurements in compliance with the standards ISO 10780, ISO 9096 and ISO EN 13284-1 was envisaged and constructed. The first set of measurements was done to allow for the calculation of reference values of gas velocity and solid particles concentration. The second set of measurements done by independent laboratories was used to calculate the value of standard deviation for proficiency assessment of interlaboratory comparison in accordance with the standard statistical tests. The data by independent laboratories were then assessed individually to check their performance. Among the eight declared values, one unsatisfactory value of gas velocity was detected. The results confirmed the validity of the idea behind this project.