Überwachung eines Films

摘要

Method and apparatus for monitoring film formation in an opaque fluid stream by immersing a segment of a transparent eccentrically mounted (11) rotatable disc (10) in the fluid stream, allowing time to accumulate film formers, then rotating the disc to expose the previously immersed section to register with an optical monitor (20-22) by which a sample transmittance may be compared to a reference transmittance; the disc may have a segment (ACB) presenting a hydrophilic surface and another segment (ADB) presenting a hydrophobic surface so that different kinds of film formers may be monitored.