CALIBRATION OF SOME WRIGHT PEAK FLOW METERS

Abstract

The performance of Wright peak respiratory flow meters is described using an absolute and precise calibration method. This showed errors as great as 25% with the peak flow meter and 40% with the mini peak flow meter. At large flow rates errors were less. The expected variation between individual peak flow meters was about 12%. The expected variation between individual mini peak flow meters was between 16% and 22%, depending on flow rate.