Optical transmission measurements for in-line monitoring of turbid oil-water emulsions

Philipp Metz; Katja Dopf; Markus Aichholz; Boris Riedel; Uli Lemmer; Barbara Freudig; Clifton Zimmermann; Martina Gerken

doi:10.1117/12.2049396

15 May 2014 Optical transmission measurements for in-line monitoring of turbid oil-water emulsions

Philipp Metz, Katja Dopf, Markus Aichholz, Boris Riedel, Uli Lemmer, Barbara Freudig, Clifton Zimmermann, Martina Gerken

Author Affiliations +

Proceedings Volume 9141, Optical Sensing and Detection III; 91410J (2014) https://doi.org/10.1117/12.2049396
Event: SPIE Photonics Europe, 2014, Brussels, Belgium

Abstract

For absorbing media the concentration may be calculated directly from the optical transmission following the logarithmic dependence given in the Lambert-Beer law. Due to multiple scattering events in oil-water emulsions (e.g. milk, cream, etc.), these exhibit a nonlinear relationship between the attenuation and the oil concentration. We demonstrate that for increasing oil content in oil-water emulsions the attenuation first increases, then levels out, and finally even decreases for a fat content of 60%. Single-wavelength optical transmission measurements are found to be well suited for the in-line monitoring of oil-water emulsions of fat contents below 20%, e.g., for the in-line fat content monitoring of milk. Using experiments and ray-tracing simulations we evaluate system optimization.

Citation Download Citation

Philipp Metz, Katja Dopf, Markus Aichholz, Boris Riedel, Uli Lemmer, Barbara Freudig, Clifton Zimmermann, and Martina Gerken "Optical transmission measurements for in-line monitoring of turbid oil-water emulsions", Proc. SPIE 9141, Optical Sensing and Detection III, 91410J (15 May 2014); https://doi.org/10.1117/12.2049396

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available