Surface Roughness Analyser

The smooth solution for rough surfaces

Whether your surface must be very smooth, show a certain texture or degree of roughness, our Surface Roughness Analyzer – SRA supports you in optimizing your material or production process. Contactless, quickly, and with an extremely high resolution, the SRA gives you a 3D image of your sample‘s surface and provides you with data which exactly describe its topography. Analyses with the  SRA help you evaluate the contribution of roughness to the wettability of your sample or to the adhesion of coatings.

Technical innovations for precision and speed

The SRA uses the confocal microscopy technique to create the spatial representation of the surface. This happens by stacking layers of 2D images, each one with a very small depth of focus, while lowering the optics with extremely tiny increments, leading to a height resolution of down to 10 nanometers. To scan an area of the sample, usual confocal microscopes use a rotating pinhole disk to create an image at each height level. The disk inside the SRA has micro lenses instead of just holes, increasing the light yield and making it possible to analyze low-reflectivity or even transparent surfaces.

The vertical transport of the measuring head uses an ultrasonic instead of a common piezo drive. Thus, while combining speed with a high resolution, the usual height range of the measurement is widely exceeded. To reach a vast scope of tasks from roughness analysis to imaging the exact shape of whole products such as screws or tooth implants, lenses with magnifications from 2.5 to 100-fold can be exchanged quickly and easily.

Measuring head for robotic systems – ready for in-line quality control

With its small size and low weight, the SRA can be used at almost any place as a lab instrument, but is also available as a measuring head to be used for automatic processes in the production line. This makes real-time sample evaluations for QC checks of work pieces possible. Adding to the versatility of the SRA itself, the software can be linked to programs such as Matlab® in order to integrate it in information systems. You can count on extensive support when it comes to incorporating the SRA into your process.

Measuring options

  • Displaying the topography of samples on a wide scale from surface roughness up to the shape of whole workpieces
  • Calculation of sample parameters such as dimensions, angles, radii
  • Analyses according to different standards, such as ISO 25178
  • Very fast measurements making it optimal for QC
  • Available as lab instrument or as measuring head for robotic systems
  • Direct data evaluation in optional MountainsMap® software

Tasks and applications

  • Coatings and other surface modifications
  • Biocompatibility of implants
  • Bonding processes
  • Construction and building material
  • Roughness contribution to paper wettability