KONTROLLVERFAHREN BEZUEGLICH DES DISPERSIONSGRADES MAGNETISCHER PIGMENTE IN EINER DISPERSION.

摘要

The mixt. (2) of powered magnetic pigment in a carrier fluid flowing through the transparent tube (1) is examined with light from pref. two Xe flashlamps (5) diffused by a hollow sphere lined wth off-white material. The light scattered within a cone of 8 deg. is analysed e.g. by a holographic grating (3) into bands of wavelengths at 20 nm spacing throughout the visible spectrum for colorimetric measurement by a corresp. number of photodiodes (4). The direct light from the source (5) is similarly analysed (6) and measured (7). The results are presented by a computer (8) either digitally or graphically on a display screen (9).