Contact Thickness Gauges

Flexible from 0.01 to 24 mm

Tactile (contact) measurement is employed at all stages of the strip production process – on the annealing line and during rolling, on the finishing line or during strip processing as well as in the steel service centre. Vollmer delivers the systems in different versions for thicknesses from 0.01 to 24 mm.

Precise even on wavy strip

With a measuring precision of down to one micrometre per millimetre of strip thickness, they meet the demands of modern rolling mills. Contact gauges adapt to the strip passage and follow any waviness of the material. They thus compensate angular errors by actively adjusting the sensors perpendicularly to the wavy strip material.

The principle - The technology in detail

The thickness is measured by using extremely precise transducers to calculate the distance between the two sensors which touch the upper and lower surfaces of the strip. The advantage of this method is that – as with the laser – the thickness is measured irrespective of the alloy. Material parameters do not have to be entered and updated.

Automatic zeroing

Vollmer uses crowned measuring sensors made from natural diamond, one of the hardest materials employed in industrial applications. When the gauge is in its parking position during changing of the coils, the sensors touch one another and the system performs automatic zeroing.

In which scenarios can we encounter contact Gauges?

• Quality Control and Inspection
  Contact gauges are essential tools for quality control and inspection processes. They are used to verify the dimensional accuracy, tolerances, and surface characteristics of manufactured parts, ensuring they meet the required specifications.

• Calibration and Metrology
  Contact gauges are utilized in calibration processes to ensure the accuracy and reliability of measurement instruments. They serve as reference standards for verifying the performance and calibration of other measuring tools, such as micrometers, calipers, or height gauges.