Correlation of Full-Flow Light Extinction Type Diesel Smokemeters by a Series of Neutral Density Filters.

摘要

The project involved testing twenty-four smokemeters by fourteen laboratories. The same series of four precalibrated metallic type neutral density filters was used by each laboratory in performing the static calibration of their diesel smoke measuring systems. The overall result was that essentially the same dectector response was reported by the laboratories although each was asked to perform the static calibrations as they normally would. It may be concluded that the smokemeter results under static conditions are essentially equivalent and that no gross or consistent discrepancies were found. (Author)