Applications
Film Thickness Measurement
Method Principles
Schematic Gauge Setup
Example: Lacquer Coatings
Example: Vapor Deposition
Example: Webcoater
The film thickness
profiles of web produced or coated foils can be determined in cross- and/or
machine-direction by using a scanning bridge and our TranSpec film thickness gauges. This permits
an intermediate feedback for your process and production control.
The picture above shows the schematic gauge setup for film thickness measurement on a web coating
or foil machine. The actual sensor (the fiber optics light guide) is mounted on a linear
motion bridge and continuously moved forwards and backwards in cross-direction to the
coating machine.
The photo below shows such a linear motion bridge with stepping motor and mounted fiber optics
light guide.
Scanning bridge with motor controller and fiber optics cable
attached