The 2D Lab Formation Sensor is based on the 2D Online Formation Tester using the same optics, electronics and results algorithm. Therefore, the lab system will provide the same analysis and give the same results as those obtained by the online system.

A CCD camera takes lookthrough images of a sample backlit by a stroboscope. The intensity of the light is regulated by the computer to obtain a constant homogeneous tone as well as a constant grey level average of the image. By automatically controlling the light intensity, formation of sheets with varying basis weights, colors or opacities can be compared.

The basis weight range is very large, from 5 g/m2, tissue, non woven, printing and writing, up to testliner, virgin board (even dyed) over 600 g/m2. The system can also be used for white paper over 1000 g/m2.

The images are analyzed by a powerful integrated computer and the results are displayed on a large 19” flat screen monitor. The algorithm was developed by CTP* and tested by many papermakers before validation. The treatment process is by far the best available thanks to CTP and its 25 plus years of experience in paper and board lookthrough analysis.

* Centre Technique du Papier. Grenoble, France