Coulometric Coating Thickness Measurement for Quality Control

Above a certain layer thickness, the non-destructive measurement of layer thickness with X-ray fluorescence reaches its limits. This is where the DJH-Series comes into play. It measures the coating thickness of almost any metal layer by using the coulometric method. This is done quite simply by deplating the coating. Many common single and multilayer coatings can be measured accurately with the DJH-Series thickness tester

The coulometric method is a cost-effective, precise alternative to the X-ray fluorescence method – provided you can accept a destructive method for coating thickness measurement. It offers you maximum flexibility, as it can be used for a wide range of coating-carrier combinations. You benefit from the coulometric method of coating thickness measurement especially in the quality control of electroplated coatings, as well as for monitoring the residual tin thickness on printed circuit boards.

Features

· Precise measurement of multilayer coatings with highly accurate electrolytic deplating technique (coulometry)

· Coating deplating according to DIN EN ISO 2177:2004

· Intuitive operation via LCD display

· Easy selection of the deplating area (Φ1.2, Φ1.7, Φ2.4mm)

· Almost 50 predefined measuring applications for different coating systems (e.g. zinc on iron or chrome/nickel/copper on plastic substrates)

· Voltage value simultaneously display

· Statistical evaluation

· Support stands for various sample sizes

· Comprehensive portfolio of accessories for adaptation to specific requirements

Additional Features with DJH-G

· Simultaneous measurement of layer thickness and potential differences

· Functions for STEP test measurement according to ASTM B764-04(2021) and DIN EN ISO16866:2022

· Adjustable deplating current and threshold voltage

· Evaluation of the potential curves directly on the PC monitor

Applications

· Production monitoring in electroplating and incoming inspection of finished parts

· Exact thickness measurement of practically any metal coating from 0.03–50µm (depending on the material)

· Coating thickness measurement of single and multilayer coatings on metallic and non-metallic substrates

· Multilayer coatings e.g. chrome/nickel/copper on iron or plastic substrates (ABS)

· Dual-layer coatings e.g. chrome/nickel on iron or copper

· Single layers e.g. zinc on iron

Additional Application with DJH-G

STEP test measurement: multiple nickel layer systems on copper, iron, aluminum or plastic substrates (ABS)