The new Optical Caliper Sensor, the latest in ABB’s 50-year history of pioneering on-line paper quality measurements, finally provides papermakers with the precision tool to measure and control caliper even on the most demanding paper grades.
Accurate caliper measurement and control are critical for defining paper quality and achieving customer satisfaction. Traditionally this has been achieved through the use of dual-sided contacting caliper sensors, but some paper applications pose severe challenges for contacting caliper measurement technology.For this reason, paper makers have been asking for a new type of caliper measurement, which overcomes the weaknesses associated with contacting caliper.
ABB proudly offers its ground-breaking new Optical Caliper sensor. After analyzing the current industry methods for non-invasive measurement of caliper, ABB have chosen a revolutionary optical method to measure caliper with unrivaled measurement accuracy. This new sensor uses a different optical approach which provides greatly improved measurement accuracy and stability. The sensor is ideal for applications where the sliding skis of traditional caliper sensors gives rise to problems. The new Optical Caliper Sensor is based on a confocal displacement measurement technique. The same technology has made recent advances in microscopy, thin-film research and semiconductor manufacturing. ABB's confocal sensor vastly reduces error from light penetration that may occur in laser triangulators.