Date of Award


Degree Name

Bachelor of Science


Paper Science and Engineering


The purpose of this study was to determine the significance of machine variables as they affect the scan average basis weight readings obtained from the Industrial Nucleonics basis weight gauge on the fourdrinier paper machine of the Department of Paper Science and Engineering at Western Michigan University. The variables used in this study were machine speed, machine chest and tray white water consistencies, tray white water flow, flow to the headbox, stock valve position and head on the stock valve. Each of the above variables was sampled every ten minutes.

There were definite correlations between basis weight variation and machine speed, machine chest consistency and head levels. A smoothing out of these process variations would give a more uniform sheet and better basis weight control.