NEW METHOD CALIBRATION FOR CALIBRATION OF A BODY BOX

摘要

A rational method for the calibration or validation of Body Boxes (BB), which are used for garment cleanliness measurement in accordance to IEST-RP-CC003.3, is presented here. Without such calibration or validation the Body Boxes may be space biased and may not even be valid for comparative evaluation of garments. The method presented here involves point source aerosol generation within a tube, dilution and comparison of calculated dilution concentrations, based on tube concentration measurements, to actual measured BB sampler values. The ratio of these two values then results in the BB calibration factor for that point or zone within the BB. By repeating the process an average calibration value and variation or range is determined. Results of two such validations of actual BBs are presented in the paper.