Micro-Polar is the latest online moisture analyzer, using state-of-the-art microwave transmission technology. The measurement is carried out non-contacting, either on a conveyor belt or chute.
Without contact to the measured material, the sensors are not subjected to wear and tear and even maintenance is not required at any time.
Typical fields of applications are to be found in the mining industry and power plants, in the chemical, pulp & paper and building materials industries. The microwave method is limited for highly conductive materials. However, our application experts will evaluate the applicability of the Micro-Polar system for each individual case.
Measuring Principle
The representative microwave transmission technology, penetrating the whole material cross-section, allows for the high accuracy and reliability of the system. 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.
(click on picture to expand)
Evaluation unit of the Micro-Polar Moisture Analyzer
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.
(click on picture to expand)
Berthold moisture measurement on wood chips
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
Multi-frequency Technology
The measurement is performed with a number of different frequencies per measurement cycle, leading to a very stable and reliable measurement, unaffected by reflexes or resonances.
High Dynamics
The high dynamic range of Micro-Polar allows the precise determination of moisture on even very high bulk loads.
Height Compensation
If the bulk height varies, a separate distance sensor can be connected, ensuring highly accurate measuring results.
Area weight Compensation
Varying particle sizes can affect the measurement performance. Using the radiometric area weight compensation the fluctuating bulk density is reliable compensated and optimum measuring accuracy is achieved.
Reference Line
An integrated reference line makes the measurement independent from potential environmental influences.
Automatic on-site Calibration
The calibration is done directly on the evaluation unit. The software contains a sample taking feature, where laboratory values can be easily entered and linked to the corresonding measurement values. The calibration curve is calculated automatically.
New Microwave Moisture Analyzer
Microwave Moisture Analyzer by Berthold Technologies
exhibited at easyFairs "Schüttgut" Dortmund 2012
Micro-Polar LB 567 / LB 568 Microwave Moisture Analyzer
Micro-Polar is the latest online moisture analyzer, using state-of-the-art microwave transmission technology. The measurement is carried out non-contacting, either on a conveyor belt or chute.
Without contact to the measured material, the sensors are not subjected to wear and tear and even maintenance is not required at any time.
Typical fields of applications are to be found in the mining industry and power plants, in the chemical, pulp & paper and building materials industries. The microwave method is limited for highly conductive materials. However, our application experts will evaluate the applicability of the Micro-Polar system for each individual case.
Measuring Principle
The representative microwave transmission technology, penetrating the whole material cross-section, allows for the high accuracy and reliability of the system. 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.
(click on picture to expand)
Evaluation unit of the Micro-Polar Moisture Analyzer
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.
(click on picture to expand)
Berthold moisture measurement on wood chips
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
Multi-frequency Technology
The measurement is performed with a number of different frequencies per measurement cycle, leading to a very stable and reliable measurement, unaffected by reflexes or resonances.
High Dynamics
The high dynamic range of Micro-Polar allows the precise determination of moisture on even very high bulk loads.
Height Compensation
If the bulk height varies, a separate distance sensor can be connected, ensuring highly accurate measuring results.
Area weight Compensation
Varying particle sizes can affect the measurement performance. Using the radiometric area weight compensation the fluctuating bulk density is reliable compensated and optimum measuring accuracy is achieved.
Reference Line
An integrated reference line makes the measurement independent from potential environmental influences.
Automatic on-site Calibration
The calibration is done directly on the evaluation unit. The software contains a sample taking feature, where laboratory values can be easily entered and linked to the corresonding measurement values. The calibration curve is calculated automatically.
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