Online Moisture Measurement

The microwave measurement system generates microwaves which interact with the water molecules due to the high dielectric constant. This interaction causes a decrease of the microwave energy, which can be detected as phase shift and attenuation. Since the phase shift and attenuation changes are directly proportional to the water content in the product, the concentration or dry content in the medium can be determined with high accuracy.

• Multifrequency technology for dynamic plausibility control of the raw signal
• Easy installation on existing conveyor belts or measuring shafts
• Signal quality management for the processing of measurement data
• Height and density compensation of non-homogeneous materials

The radiometric method of moisture measurement is based on the deceleration of fast neutrons by hydrogen atoms. The fast neutrons are essentially unaffected by other elements. To measure the moisture content, a source is used which emits fast neutrons. Due to the interaction with hydrogen atoms in the water molecules in the measured material, a cloud of slow neutrons is formed in the vicinity of the source.

• Representative measured values due to large measurement volume
• Not influenced by temperature, conductivity, pressure, pH value etc.
• Proven measurement technology with achievable accuracy of ±0.1 % moisture
• Various sensors for measurements in or through the vessel