Sealing Quality Tester

Sealing quality tester for anodic coatings on aluminum according to DIN EN ISO 2931 and ASTM B 457-67

The weather resistance of a finish is a function of sealing quality. According to DIN EN ISO 2931 and ASTM B 457-67, the admittance (Y) of a capacitor in which the anodic oxide film forms the dielectric is a good yard-stick of sealing quality. The ANOTEST® YMP30-S measures the admittance according to standards, and due to its design is ideally suited for on-site testing.

Sealing Procedure for anodic oxide films on aluminum
Sealing Procedure for anodic oxide films on aluminum
Sealing Procedure for anodic oxide films on aluminum.

Measurement procedure

A self-adhesive rubber ring is placed on the surface to be tested and the space so enclosed filled with a few drops of a test fluid. The aluminum substrate is then connected to the earthing socket of the unit and the test electrode dipped into the cell fluid, thereby forming a capacitor in which the anodic film acts as the dielectric. It is the admittance of this capacitor which is measured and directly indicated in μS (microsiemens).

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