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DeFelsko PosiTest Automatic Adhesion Tester AT-A is an innovative instrument that combines user convenience and repeatability for quality inspection on adhesion of a coating or several coated samples. This adhesion tester is applicable for any paint product on any surface and automatically assess the minimum tensile stress needed to conforms to international standards including ASTM D4541/D7234, ISO 4624/16276-1, AS/NZS 1580.408.5 and others.
Thanks to its electronically controlled hydraulic pump action, it applies smooth and continuous pull-off pressure that will greatly reduces user effort and the risk of influencing the pulling process. Compared to other method, DeFelsko PosiTest maximizes the tensile stress, as the test is done by securing loading fixtures (dollies) perpendicular to the surface of a coating with an adhesive. Then the DeFelsko PosiTest is attached to the loading fixture and is then aligned to apply tension perpendicular to the test surface. The force that is applied gradually increases and is monitored until a plug of coating is detached, or a previously specified value is reached
Your investment on DeFelsko Automatic Adhesion Tester PosiTest AT-A will allow you to test indoors and outdoors surface and in all types of weather. BE advised that after the pull-off test, the dolly and coated surface should also be examined as many National and International standards such as ASTM D4541 and ISO 4624 do require the nature of the fracture to be recorded. DeFelsko PosiTest are applicable to test rugedness of coating on concrete, boiler pipes, steel structure, tubings (depends on the curvature and surface uniformity), durability of painting or protective flim, remaining life assesment of coated steel prducts and many more.
DeFelsko PosiTest Automatic Adhesion Tester AT-A features:
DeFelsko PosiTest AT-A Automatic Adhesion Tester Specification :
Order Code |
ATA 20 |
ATA 50 |
ATA50T |
ATA50C |
Dolly size and stand-off* |
20 mm |
50 mm |
50x50 mm |
50 mm |
Typical applications |
Higher bond strength coating on metal |
Lower bond strength coatings on wood, concrete and plastic |
BS EN 12004-2 Comentitious adhesives for tiles |
ASTM C1583 Concrete surfaces and overlays |
Range |
0.7 – 24 MPa 100 – 3500 psi 100 – 7550 N |
0.4 – 3.8 MPa 50 – 560 psi 100 – 7550 N |
0.4 – 3.033 MPa 50 – 440 psi 100 – 7550 N |
0.4 – 3.8 MPa 50 – 560 psi 100 – 7550 N |
Resolution |
0.01 MPa (1 psi) |
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Accuracy |
± 1% Full scale |
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Included dollies |
Ø 20 mm (qty 20) Aluminum |
Ø 50 mm (qty 8) Aluminum |
50x50 mm (qty 4) with threaded post steel |
Ø 50 mm (qty 4) with ≥ 25 mm thickness steel |
Cutting tool |
20 mm hole saw |
50 mm hole saw |
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50 mm diamond grit hole saw with arbor |
* Optional 20mm/50mm/50 mm C1583/50 mm Tile Conversion Kits allow each model to be used with alternative dolly sizes. Custom 10 and 14 mm dollies are available for special applications (compatible with 20 mm stand off).
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