New Companion Calculator Spreadsheet Makes Cross-Machine Grammage Profile Measurement
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Process control engineers that interact closely with the QCS systems on a paper machine and engineers involved in projects to install new paper machine headboxes or QCS systems are often tasked with determining the variation in mass per unit area in the cross-machine direction, commonly referred to as the grammage (or basis weight) profile.
While TAPPI Standard Test Method TAPPI/ANSI T 545 om-19 and/or Technical Information Paper TIP 1101-01, Calculation and Partitioning of Variance Using Paper Machine are often the go to resource for the job, the standard’s calculations are very tedious to perform manually. This makes the process error prone. In addition, testing the statistical significance of the results requires looking up values on an F-Distribution table.
Developed by TAPPI’s Process Control Division’s Reel Statistics Common Interest Group, the new T545 and TIP 1101-1 Calculation Form- Excel Spreadsheet allows users a way to easily and quickly perform the calculations and provides an independent way of performing QCS profile variability calculations. Get your calculation form now.
