Voith develops new non-contacting caliper sensor for precise paper measurements

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Voith develops new non-contacting caliper sensor for precise paper measurements

May 04, 2010 - 22:29

HEIDENHEIM, Germany, May 5, 2010 (Press Release) -Until now, the measurement of paper caliper has always been a balancing act: The more precise the measurement, the greater the probability that the paper will be damaged by contact with the sensor during measurement. Voith Paper Automation has developed the first sensor that puts an end to that balancing act: Voith LSC QuantumSens is the completely non-contacting caliper sensor that also meets the tough demands of measurement precision.

Voith LSC QuantumSens can keep pace with the most precise sensors available on the market. At top speed, it floats above the entire width of the paper web and works with a resolution of approximately 0.1.

Thanks to the non-contacting caliper measurement on both sides, measurement cannot lead to either streaks or other defects in the paper. Proven eddy current technology, combined with a patented, high-resolution optical measurement, ensure the highest precision measurement. Another crucial advantage over other solutions on the market is that mechanical inaccuracies cannot affect its precision due to the integrated position measurement. In addition, the patented multi-point measurement process permanently eliminates the effects of sheet flutter or changes in the sheet position on measurement. The sensor is also resistant to contamination, thus permitting stable measurement, even under the toughest operating conditions.

Voith LSC QuantumSens has already proven these numerous properties in practice: Test results on the test calender at Voith Paper Technology Center have shown that the readings from the sensor are fully reproducible. High precision has also been proven by comparing the measured absolute values with laboratory measurements. The sensor also works extremely reliably under real production conditions. This has been demonstrated by its installation on a paper mill for manufacturing sensitive thermal paper and also on one of the fastest newsprint facilities in the world.