From the food and chemical industries to power stations and mines - the areas of application for our microwave measuring systems are manifold. The choice of sensors and technical features, such as height, measurement dynamics, multi-frequency technology, user-friendly software, etc., is appropriately large.
With the microwave systems from Berthold, you can measure liquids, suspensions, pastes, granulates, powders and bulk solids online.
The measuring principle
The MicroPolar measuring systems use the special dielectric property of water. The measuring system generates microwaves that interact with the water molecules. This interaction causes an attenuation of the microwave energy, which can be detected as phase shift and attenuation.
Since the phase shift and attenuation change is directly proportional to the water content, the concentration of the medium can be determined with high accuracy. Berthold’s multi-frequency technology ensures very stable and reliable measurements that are unaffected by interfering reflections or resonances.
The microwave power of the MicroPolar measuring systems is so low (max. 10 mW) that the material to be measured is neither heated nor changed in any way.
General advantages
- Cost-optimized production
Online monitoring of production allows trends to be identified and, if necessary, interventions to be made in production at an early stage. The advantages are significant cost savings and improved productivity. For many of our customers, the system has already amortised in less than a year.
- Accurate, reliable and representative
Colour, viscosity, inhomogeneity, or dust have no influence on the measurement. The entire material cross section is always recorded. In addition, our advanced multi-frequency technology and a reference line for signal loss compensation ensure extremely stable and representative results.
- Contact free
Most of our sensors do not come into contact with the material being measured, so they are not subject to any wear and tear. Maintenance or special cleaning of the system is not required.
- Easy to use
Our microwave systems are easy to install on existing equipment. The transmitter has a large display and user-friendly software. It also offers automatic on-site calibration.
Moisture measurements
The Berthold MicroPolar microwave measuring system or microwave resonator can measure the moisture or dry content of different bulk materials very accurately online. With the specially developed sensors, measurements at the conveyor belt, silo, hopper, or shaft can be easily realised. Typical applications are the food, chemical and construction industries, mining, power generation and many more.
