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Product news
07.07.2015  |  17212x
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Belt Scale measures Volume instead of weight

Task:

A high voltage cable should be layed under the Rhine. The resulting drilling spoil is transported via a belt conveyor. Basically, it is extremely important that the volume of subsidized soil is not greater than the volume of the drilled cylinder. If this exceeds a certain limit, the work must be stopped immediately. The operator of the drilling system wants to use a conventional belt scale for this application. The accumulated weight value (t) should then be converted by a correction factor in m³. This approach only provides satisfactory results, if the density of the soil and the loosening factor are reasonably constant.

Solution:

Instead of a gravimetric belt scale an optical ”belt scale” was used. This type of scale works with a high-speed scanner, that scans the surface of the belt with optical sensors and thus determines the volume delivered directly and maintenance-free. A robust ”CAT - smartphone” is provided for data exchange and display of the flow rate and the absolute volume. The relevant instructions for the operator data can be displayed, printed and transmitted via cable or email to a PC. When using a commercial SIM - card, the data can also be send directly from the smartphone. A software for statistical analysis is already included.

If required, the volume (m³) can be converted to absolute t or t/h by a conversion factor.
Regular recalibration in mobile crushers and screeners omitted in the optical belt scale.

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