OnTop Online Measurement

Measuring surface topography in real-time.

The online or inline version of OnTop is meant to be installed directly against a moving but stabilized surface web, for instance against a reel, extracting real-time surface information from the surface web. The device has been installed successfully in paperboard manufacturing machines.

The online/inline device gives roughness average (Ra) values and spatial wavelength spectra in real-time.

The online device installed against a paperboard reel.

Specification

Measurement method
Optical laser based readout of surface topography

Measurement parameters
Surface roughness (Ra) and Spatial wavelength spectra 

Measurement width
15 cm in version with double lasers and cameras

Measurement range (spatial wavelengths)
100 um – 1 cm.

Measurement rate (default)
- 4 measures per second (before mean value formation)
- Max velocity of surface web 2000 m/min

Physical size 
About 400 x 500 x 450 mm.

Weight 
About 25 kg.

Power
Max 100 W

Hardware interface
230 V power socket, compressed air (instrument air), VGA to external screen, USB, Ethernet