AAT-M Manual Pull-Off Adhesion Tester

Introduction

AJR NDT AAT-M manual pull-off adhesion tester measures the adhesion of coating to metal, wood, plastic, concrete and other rigid substrates. The pull-off adhesion tester measures the force required to pull a specified test diameter of coatings or material away from its substrate using hydraulic pressure. Pressure is calculated based on force and is displayed on a digital LCD with unit Mpa or kN and represents the coating's strength of adhesion to the substrate. The tester confirms to ASTM D4541, D7234, ISO 4624, and others.

Principle

The AAT-M tester is mainly composed of pressure sensors and measurement display circuits, which are connected through data connection cables. The pressure sensor produce voltage signal while it is forced. Then A/D converter converts voltage signal to digital signal. After the single -chip microcomputer is processed, the LCD display the adhesion value.

Features

Ø    Portable, requires no external power source, ideal for field or lab use.

Ø    Portable shock-resistant instrument box and hard aluminum alloy main body, rainproof, dustproof, and impact.

Ø    Large and easy to read LCD digital display.

Ø    Select MPA or KN units by touch buttons.

Ø    Easily select dolly sizes, change measurement units, or store readings with the touch of a button.

Ø    Conversion charts not required: tester automatically calculates pressure based on dolly size.

Ø    High quality mini hydraulic pump can be applied to any occasion.

Ø    The pressure and the display system are calibrated by the standard force gauge, and the accuracy is controlled within ± 1% (full range).

Ø    Self aligning dolly enables accurate measurements on smooth or uneven surfaces.

Ø    High grade, industrial pressure sensor ensures continued accuracy.

Ø    Optional dolly: 10mm, 14mm, 20mm, 50mm.

The self-aligning, quick-coupling actuator and spherical articulating dolly head enable uniform distribution of the pulling force over the surface being tested, preventing a one-sided pull-off.

Technical Specification