In order to perform satisfactorily, coatings must adhere to the substrates on which they are applied. There are three different adhesion test procedures to assess the resistance of paints to separate from the substrate. The cross cut test, also described as cross-hatch, uses a blade to cut through the coating to the substrate. At least two cuts are made that intersect at 90 degrees to get a right angle lattice pattern. The cross-cut area is observed for any adhesion failure. The second method to test the coating adhesion is using a stylus or loop that an increasing amount of weight is applied until the coating is removed from the substrate. The third method called pull-off adhesion, measures the amount of tensile stress to pull the coating off the substrate. A dolly is glued to the coating surface, after the glue is cured, a testing apparatus is attached to the loading fixture and aligned to apply tension perpendicular to the test surface. The force applied is gradually increased and monitored until either a plug of coating material is detached, or a specified value is reached.

BGD 500 Digital Pull-off Adhesion Tester is a portable, hand-operated instrument which is used to measure the force required to pull a specified test diameter of coating away from its substrate using hydraulic pressure. The pressure is displayed on a digital LCD and represents the coating’s strength of adhesion to the substrate.
It evaluates the adhesion (pull-off strength) of a coating by determining the greatest tensile pull-off force that it can bear before detaching. Breaking points, demonstrated by fractured surfaces, occur along the weakest plane within the system consisting of dolly, adhesive, coating layers and substrate.
BGD 500 Digital Pull-off adhesion Tester conforms to ASTM D 4541, ASTM D 7234, EN 13144, ISO 4624, ISO 16276 etc.

Convenient:

• Portable design, can be used anywhere.
• Built-in rechargeable lithium battery, no need any external power source.
• Selectable directly four different sizes dolly for different resolution and testing range
• Get the testing results from LCD directly.
• Includes all tools needed for testing

Precise:

Each PsiaTester’s pressure system is calibrated to within 1% accuracy by NIST traceable load cells
High-precise professional sensor ensures 0.01MPa resolution
Self-aligning dollies ensure to get a reliable testing results for smooth or uneven surfaces.
Come with calibration certificate

Intelligent:

Store all test results  includes Max. pull-off power,pull-off rate, dolly size and time
Two units MPa and psi for selection and can be converted automatically.

USB interface as standard, no need any software, PsiaTester is also a U disk, when connecting the computer, operator can read all data directly which is recorded during testing.

Showing pull-off rate allows users monitor and adjust pull speed according to different test requirements.

Durable:

• Dustproof and shockproof design meets any harshest operating environment
• Strong plastic carrying case
• One year warranty.

Packing List:

• Adhesion Tester with digital display
• 20mm Aluminum test dollies 20 pcs.
• Cutting toll for 20mm dollies
• 3M Adhesive and glue gun
• Micro-USB cable
• Operation Manual
• Carrying case

Auto calibration to assure the accuracy. Make a quick adjustment for the sound velocity thickness, and a quick recall to the stored data Thickness measurement storage, which facilitates the height work or working in wild area. Sound velocity measurement. Large LCD display for easy readout. Low battery indication and auto power off.

In the Box

1 x Ultrasonic Thickness Gauge 1 x F10mm 5HZ Transducer 1 x Lubricant/Coupling Agent 1 x 4mm Sampling Block 1 x Operating Manual 1 x Batteries 1 x Hard Carry Case

This easy to use gauge measures the peak-to-valley height of a blast cleaned surface.
Without circuit boards, this gauge is intrinsically safe, making it ideal when working in hazardous environments.
The average of a series of measurements provides an indication of the surface roughness and allows the surfaces to be compared as blasting proceeds.
Metric and Imperial versions

Surface profile The degree of profile on the surface affects a coating’s overall performance. The height of the profile (measured from the peaks to the troughs) determines aspects such as adhesion, coverage and overall volume of coating used. If the profile is too large the amount of coating required to ensure adequate coverage increases, otherwise there is a danger that the peaks remain uncoated - allowing rust spots to occur. If the profile is too small, there may be an insufficient key to produce adequate adhesion, leading to premature coating failure. Ensuring the correct surface preparation optimises the performance of the coating and material usage.

There are four different methods available for testing surface Profile

Surface Comparators

• Replica Tape
• Surface Profile Gauges
• Surface Roughness Testers

Packing list:

Elcometer 123 Surface Profile Gauge, glass slide, 2mm allen key, carry case and operating instructions.

Dolly, 20mm & 50mm For Use With G2749713, Application Testing Bond Strength Of Coatings On Steel, Includes 20mm, 50 mm Aluminum Dolly, Package Quantity 10 '