QCS scanners are used to monitor key sheet properties at one or more locations on modern paper and board machines, and report average values, standard deviations, and MD and CD profiles. The CD profile data can be used to make automatic or manual adjustments at one or more profiling systems. Because sheet properties can be affected by more than one profiling system, profiling actuator adjustments can affect multiple sheet properties, and sheet shrinkage and sheet wander occur, it can be challenging to coordinate CD profiling efforts.
Learning Objectives
At the end of this module, you will be able to:
- Identify the main components of a QCS scanner
- List the potential benefits of CD profile control
- List safety guidelines for QCS scanners and CD profiling systems
- Identify common locations for QCS scanners
- Identify and describe the types and locations of profiling systems commonly used on paper and board machines
- Describe when manual profile adjustments might be used instead of automatic profile adjustments
- Identify the challenges of CD profile control on modern paper and board machines