Kapa (I & II)
KAPA is the successful model of SBI, developed for films. Kapa I up to 2mm thick. Kapa II up to 6mm thick.
This indirect measuring system with a measuring roller has an extremely robust sensor combination in one housing: capacitive and eddy current sensor.
It uses a non-contact, indirect measuring method. If we measure the capacitance between sensor and measuring roller, this is corrected by the distance measurement of the eddy current sensor. From this, the thickness is calculated in comparison with a calibrated value.
When the extrusion system is running, the sensor is set to a fixed position (measurement along a line). At the sensor position, a piece of the film is cut out, and the thickness is measured. This thickness is then entered as the calibration value. Calibration is only necessary once per material (recipe) and can be saved with the recipe.
|Technical Specifications||Kapa||Kapa II|
|sensor system||capacitive/eddy current||capacitive/eddy current|
|Max. thickness||2 mm||6 mm|
|measured cleaving||4,5 mm||9,5 mm|
|sensor diameter||30 mm||45 mm|
|measuring spot diameter||12 mm||18 mm|
|sensor resolution||0,05 µm||0,05 µm|
|accuracy||≤ 0,1 μm||≤ 1,0 μm|
|measuring speed||10 – 300 mm/s adjustable||10 – 300 mm/s adjustable|
|process speed||10 – 500 mm/s adjustable||10 – 500 mm/s adjustable|
|diameter of the refernce roller||200 mm||200 mm|