FEATURES OF THE MW-T

The MW-T system measures the moisture content of bulk products in boxes
or bales while the package is moving on a conveyer system.

Microwave transmission measurement

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MICROWAVE TRANSMISSION MEASUREMENT

Measurement is performed automatically while the bale or box is moving on a conveyor system and passes between a pair of antennas that are fitted at both sides of the conveyer. A low-energy microwave signal is transmitted through the box or bale and interferes with the water molecules in the product. The MW-T analyzer continuously calculates moisture and density from the microwave readings. The measuring method has been developed by TEWS Elektronik and is protected by patents.

Measurement of average moisture in bales and boxes

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MEASUREMENT OF AVERAGE MOISTURE IN BALES AND BOXES

Transmission measurement scans much more volume of a bale or a box than conventional sampling can do. This results in reliable average values which are not falsified by single wet spots or by insufficient taking of samples.

Measurement of moisture profiles and density profiles

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MEASUREMENT OF MOISTURE PROFILES AND DENSITY PROFILES

While the box or bale is conveyed between the microwave antennas, it is scanned 30 times per second. This allows for measuring and displaying accurate profiles of moisture and density along the package. Anomalies like wet spots or hidden foreign objects can be detected by monitoring the profiles.

Non-contact, non-destructive measurement

NON-CONTACT, NON-DESTRUCTIVE MEASUREMENT

TEWS Elektronik’s transmission measuring system uses a low-energy microwave field that penetrates a bale or a carton while the package is conveyed between a pair of antennas. No part of the product is destroyed, heated or otherwise affected by the measurement.

No unpacking, no sampling, no weighing, no waiting

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NO UNPACKING, NO SAMPLING, NO WEIGHING, NO WAITING

The measurement is fully automatic and needs no activity or interference of an operator. It is triggered by light barriers that detect the package on a conveyer system. No opening of a package, no taking of samples is required. Measuring values are available immediately after the bale or box has passed the antennas.

Independent of varying product density or thickness

INDEPENDENT OF VARYING PRODUCT DENSITY OR THICKNESS

TEWS Elektronik’s transmission system measures moisture independently of varying bulk density of a product or of varying compression or varying dimensions of bales. Many other systems which measure moisture in the core of a product cannot distinguish between varying moisture and varying sample mass. TEWS’ measuring method is more sophisticated. Two independent microwave values are measured, analyzed and computed in a way that the moisture reading is compensated for varying sample mass, density or compression. Even more, the MW-T analyzer can be calibrated for density measurement.

No scale or other weighing system required for mass / density compensation

NO SCALE OR OTHER WEIGHING SYSTEM REQUIRED FOR MASS / DENSITY COMPENSATION

TEWS’ transmission measurement provides accurate moisture values without additional weighing. Simple transmission systems have to use an additional scale to compensate for the falsifying influence of varying sample mass on moisture measurement. However, this may result in deviations too, because a scale sees the whole package and transmission just sees a part of it. Since TEWS Elektronik’s measuring method quantifies product density as well as moisture, it does not require a scale or weighing system for density compensation.

Measuring results within seconds and high throughput

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MEASURING RESULTS WITHIN SECONDS AND HIGH THROUGHPUT

With a MW-T instrument moisture measurement in bales and boxes is a matter of seconds. No more waiting for measuring results. Fast and reliable 100%-control of incoming goods and finished product has become possible.  Working at high speed, the measuring system provides approx. 30 readings per second.  This allows for the displaying of moisture and density profiles as well as for providing readings which represent the average moisture of product in a whole bale or container.

Product-specific calibration

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PRODUCT-SPECIFIC CALIBRATION

Product specific calibrations can be set up by the user and are stored in the MW-T measuring system. If required by product changes, it will be easy to adjust a calibration.

Designed for industrial environments

DESIGNED FOR INDUSTRIAL ENVIRONMENTS

MW-T instruments are built for industrial environments. Operation doesn’t require any consumables. Instruments are a low-maintenance piece of machinery. A built-in touch screen monitor and connection to the local network make operation easy.

Microwave Transmission Measurement