Chair of Microwave Engineering

composition monitor

Composition Monitor

Target

Composition of foods to help determine the dielectric spectra, in particular, added water

 



Motivation

During the processing of food, water is added:

  • By cleaning
  • To maintain the nutritive
  • Antioxidant effect
  • Qualiy preservation
  • Downside: Dilution of the food


As from 2001 in the EU mandatory labeling of added water in food.

 



Open Coaxial Line as a Probe

 

Offene Koaxialleitung als Sonde

 

  • The probe consists of an open coaxial line, with the reflection coefficient is measured
  • The reflection factor is measured with a network ranging from 200 MHz to 12 GHz
  • So easy, the probe is also a good contact with the test object is very important for testing
  • Even a small air bubble can make a measurement useless

 



From the Reflection Coefficient on the Composition

 

Vom Reflexionsfaktor zur Zusammensetzung




Source of the Network

Signalquelle des Netzwerkanalysators



Receiving part of the Network

 

Empfangsteil des Netzwerkanalysators




Contact
Dr.-Ing. Frank Daschner
Phone: 0431 / 880-6169
E-mail: fd@tf.uni-kiel.de
 

If interested in publications or other information materials for this project please contact the secretary or to the persons indicated above.