Moisture - Microwave Technology

Microwaves penetrate the bulk material, causing a rotation of the free water molecules. As a result the velocity of the microwaves is slowed down (phase shift) and their intensity is weakened (attenuation). Both effects are measured and used as a direct indication of the moisture content.

These measuring effects are already achieved by using very small microwave transmission power – typically 0.1 mW. Consequently the measured material is neither warmed nor modified. Factors such as color, viscosity, inhomogeneous composition or dust have no or only a negligible effect on the measurement performance.

Benefits at a Glance

  • Non-contacting and non-intrusive
  • No wear and tear
  • Online process control
  • Measurement of both: phase shift and attenuation
  • Precise and maintenance-free operation
  • Measurement of the whole material profile
  • Easy to install on existing conveyors or chutes

More about our Microwave Moisture Analyzers: MicroPolar Moisture Measurement