JYVASKYLA, Finland, May 01, 2008 (Press Release) - Metso Automation has introduced a new, ground-breaking paper quality control system, called PaperIQ Select. The system has extended online quality and process analysis functions and paper machine disturbance control capabilities. These enhancements are provided by new paper quality measurements, online machine direction (MD) and cross direction (CD) spectral analysis and a completely new approach to managing control of the scanning function.
This revolutionary selective and adaptive paper web measuring technique suits the different dynamic measurement and control requirements of steady state production and machine upset conditions like breaks and grade changes, and precision paper edge analysis. All this is possible with new intelligent scanners, ultra fast measurements and data collection. The IQScanner-i is designed for wide machine applications, up to and beyond 11meters in trim width. The IQScanner-R is specifically designed for narrower machines, under 5.5 meters.
End of traditional scanning
The new adaptive, situation-based patented scanning technique replaces and vastly improves the analysis and control capabilities of the single speed, front to back scanning action of traditional QCS systems. Now, it is possible to have variable scanning speeds and scan widths as well as MD and CD control responses to suit normal production conditions or upset states. The result is less broke because of faster start-ups and grade changes, and quicker recovery from breaks and coating blade changes.
Fast on-line paper analysis
Based on selected variability triggers, the system automatically selects an analysis mode. MD paper variation can be reported in several frequency bands by the spectral analysis capability built into the system. Paper quality variability can therefore be related to upstream process variations, and corrections can be made. The variability analysis can be used to benchmark machine variability for continuous improvement programs. The system also provides high resolution, high speed analysis of the critical sheet edge areas, for better edge quality.
Full selection of innovative measurements
The new PaperIQ Select includes measurements for weight, ash, moisture, spectral color, laser and magnetic caliper, optical printing surface properties, image analysis formation, porosity, reel micro-diameter and hardness, web tension profile, plus high speed IR detection of wet end moisture levels.
One of the totally new features is full utilization of multi-purpose infrared detection. The same multiple wavelength spectral analysis technique can be used to selectively measure moisture, opacity, fiber weight and ash levels, even silicon. The types of measurements required can be selected for the application. For instance, a nuclear basis weight sensor is not mandatory for tissue grades.
