Coating Thickness - Senze-Instruments

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Process & Quality Control

Coating Thickness

Coatings & Industry > In-Line Measurement
Coating Thickness Gauge Erichsen LayerScan 590

Traditionally, coating thickness measurement is performed offline at the quality control or at the expedition zone. The Erichsen LayerScan 590-500, revolutionizes this process by integrating a coating thickness measurement system directly into the production department.

It allows non-contact coating thickness measurement with a distance of 5 - 50 cm on line speed from 0 to 15 m/min **.
From installed based system experience, for 250um powder uncured, max. speed is 2m/min. For 100um powder uncured, max. speed is 15m/min. For 20um cured, max. speed is above 80m/min. The maximum tolerable surface speed depends on the distance between coatmaster and surface, as well as  thickness of the coating and the substrate type.

There is a difference between measuring paint before or after curing.
Typically, before curing the materials are thermally slower, therefore object speed is more critical.

For the non-destructive, non-contact measurement of coating properties uses the most advanced thermal optics and digital signal processing techniques on the widest range of substrates: metal, wood, ceramics, plastic, CFRP, glass, etc..

The LayerScan 590 measurement system is used for quality and process control in the powder coating, paint and thermal spray industries.
A big benefit is the possibility to measure coating thickness early in their process, even on parts coated with uncured powder coating or wet paint.

The LayerScan 590 measures thicknesses from 1 μm to 1 mm by non-contact and nondestructive method, immediately after the application.
Regardless of the color of the coating or of the shape and material of the substrate, the device will provide accurate test results.
It works on the principle of the thermal coating resistance.

** depending on coating material, substrate material and coating thickness the measurement can be made up to 50 m/min.
For a wet paint on metal with 50um wet thickness measurement until 50m/min is possible.
We are at your service for detailed test of your samples.


Test Principle

Proprietary technology for the non-destructive, non-contact measurement of coating properties uses the most advanced thermal optics (ATO) and digital signal processing (DSP) techniques.
  • a computer-controlled, pulsed flash lamp surrounding the LayerScan lens warms the coating
  • a specialized infra-red detector in the lens monitors remotely the resulting surface temperature progression
  • the surface temperature decays with characteristic dynamics that depend on the thickness of the coating and the thermal properties of the substrate material

  • The proprietary algorithms analyze the dynamic surface temperature progression – determining coating thickness and other properties, quantitatively and repeatably.

    The LayerScan 590 advanced thermal optics allow you to measure the coating thickness of parts in a non-destructive and non-contact manner – from a distance of 5 - 50 cm away.

    As a result, you can inspect a wide range of parts, of different shapes and sizes, in almost any production environment.
    Design and Function

    During the thermal coating measurement a computer-controlled, pulsed flash lamp surrounding the LayerScan lens, warms the coating to be examined.
    A specialized infra-red detector in the lens monitors remotely the resulting surface temperature progression
    The surface temperature decays with characteristic dynamics that depend on the thickness of the coating and the thermal properties of the substrate material.
    The thinner the coating is (given that it has a lower thermal conductivity than the substrate), the faster the surface temperature decreases.
    The temperature behaviour over time provides information about the thickness of the coating.
    Coating parameters such as layer thickness, but also the porosity of the thermal coating resistance, the thermal conductivity and the thermal diffusivity can be determined quickly and reproducibly.
    Inspect a precise spot
    Furthermore, you can adjust the size of the inspection area depending on the part geometry, your quality criteria and process requirements.
    So you can measure the coating thickness exactly where you want on the part, in a precise spot of 2 - 4 mm².


    Inspect during procedure
    The versatile LayerScan is designed for both Off-line and In-line measurements of coating properties.
    With its powerful features, the instrument is equally at home in your quality control lab as in your factory coating line.

    Check  parts  early  in process
    Also  suitable  for wet  paint  uncured  powder coating.

    Inspect  coatings  on  the   widest  range  of   substrates:
    metal,  wood, ceramics,   plastic,  CFRP,  glass,  etc.

    Measure  the  thickness  of all  colors  of  coatings
    Accurately  and  rapidly.  with a choice of three, quick and easy calibration options:
    • no calibration (relative measurement)
    • pre-calibration
    • one-step calibration
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