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Adhesion
PosiTest AT Pull-off Adhesion Tester – Manual or Automatic
The PosiTest AT Pull-off Adhesion Tester uses hydraulic pressure to apply perpendicular force and debond an aluminum pull stub from the coating surface. Measure the adhesive and cohesive strength of coatings and coating systems in the laboratory, shop or field using this self-aligning hydraulic tensile adhesion testing kit.
PosiTest AT Pull-off Adhesion Tester – Manual or Automatic
Documents
Videos
How to Measure Adhesion Using the PosiTest® AT Adhesion Tester
PosiTest® AT Self-Alignment Feature
PosiTest AT-A – Automatic Adhesion Tester
Descriptions
PosiTest AT-A Automatic
- Electronically controlled hydraulic pump automatically applies smooth and continuous pull-off pressure. Greatly reduces user effort and the risk of influencing the pulling process
- User adjustable pull rate, pull limit and hold time
- Internal memory stores maximum pull-off pressure, rate of pull, test duration, dolly size, pass/fail, nature of fracture and user notes for 100,000 pulls in up to 1,000 batches
- Impact and scratch resistant color touch screen with keypad for operation with or without gloves
- Compatible with PosiSoft® Desktop, PosiSoft.net and PosiTector® App (Apple iOS and Android)
PosiTest AT-M Manual
- Manual hydraulic pump designed to apply smooth and continuous pressure with a single stroke
- Pull Rate Indicator to manually monitor and adjust the rate of pull
- Internal memory stores maximum pull-off pressure, rate of pull, test duration and dolly size for up to 200 pulls
- Compatible with PosiSoft® Desktop for viewing, printing and storing measurement data
PosiTest AT-A Automatic
Key Features…
- Electronically controlled hydraulic pump automatically applies smooth and continuous pull-off pressure. Greatly reduces user effort and the risk of influencing the pulling process
- Impact and scratch resistant color touch screen with keypad for operation with or without gloves
- Built-in rechargeable battery performs over 200 tests per charge. Continue testing with AC power while the battery recharges.
- Environmentally sealed enclosure—weatherproof, dustproof and shockproof—meets or exceeds IP65
- Rubberized, shock absorbing grips provide a stable, skid-resistant footing
- Self-aligning aluminum dolly enables accurate measurements on smooth or uneven surfaces
- 10, 14, 20 or 50 mm dollies maximize capability and measurement resolution across a wide range of bond strengths. Maximum pull-off pressure by dolly size…
– 10 mm: 14000 psi (96 MPa)
– 14 mm: 7000 psi (50 MPa)
– 20 mm: 3500 psi (24 MPa)
– 50 mm: 560 psi (3.8 MPa) - User selectable measurement units: psi (pounds per square inch), MPa (Megapascal), Nmm2 (Newtons per millimeter square) or Newton (force)
- User adjustable pull rate, pull limit and hold time
- Rotating display for horizontal and vertical use
- Calibrated and certified to ± 1% accuracy using a NIST traceable load cell
Adhesion testers include everything needed for testing: Automatic Adhesion Tester, built-in rechargeable NiMH battery with charger, dollies, abrasive pad, cutting tool, glue with mixing sticks and palettes, cotton swabs, USB cable, PosiSoft® Software, instruction booklet, shoulder strap, Certificate of Calibration traceable to NIST, two-year warranty, and a sturdy, lightweight carrying case^
* 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).
Conforms to international standards including ASTM C1583/D4541/D7234/D7522, ISO 4624/16276-1, EN 1542/12004-2, AS/NZS 1580.408.5 and others
Memory and Reporting Features
- Internal memory stores maximum pull-off pressure, rate of pull, test duration and dolly size for 100,000 pulls in up to 1,000 batches
- Record the results as pass/fail and the nature of fracture – cohesive, adhesive and glue failures
- Wirelessly connect to your smart device using our free PosiTector App (Apple iOS and Android)
- WiFi technology wirelessly communicates with PosiSoft.net, downloads software updates and allows access to stored measurement data using standard web browsers (see WiFi Features for full details)
- PosiSoft USB Drive—stored readings and graphs can be accessed via USB using universal PC/Mac web browsers or file explorers. No software required
- Compatible with PosiSoft® Desktop, PosiSoft.net and PosiTector® App (Apple iOS and Android) software solutions
PosiTector® App Features
- Add images and notes using the camera or keyboard
- Create customized, professional PDF reports
- Share, backup, synchronize and report measurement data
- Auto-pairing Bluetooth (BLE) connection
- See the Help File to learn about how it works
Touch Screen Display
Recording the Nature of the Fracture
Upon completion of a pull-off test, the dolly and coated surface should be examined. In addition to pull-off force, many National and International standards such as ASTM D4541 and ISO 4624 require the nature of the fracture to be recorded.
- Cohesive fracture: fracture occurs within a coating layer (same coating on dolly face and coated surface).
- Adhesive fracture: fracture occurs at the interface between layers (coating on dolly face differs from surface).
- Glue failure: visible separation of the glue from itself, the coating or dolly (no coating visible on the dolly face).
The cohesive and adhesive fracture visual analysis can be recorded using the PosiTest® AT-A’s keypad or touch screen display. Alternatively, the information can be reported using the PosiTector® App.
Fractures are visually estimated and recorded as a percent of each. The two layer example below illustrates a cohesive fracture within coating layer 1 and layer 2 (visually estimated at 50% each). Recorded results are included in reports.
The PosiTest® AT-A can record fracture information for up to five layers. For full details and examples see Visual Analysis and Recording of Test Results.
PosiTest® AT-M
Key Features…
- Manual hydraulic pump designed to apply smooth and continuous pressure with a single stroke
- NEW High-contrast, easy to read color display
- Environmentally sealed enclosure—weatherproof, dustproof and shockproof—meets or exceeds IP65
- Self-aligning aluminum dolly enables accurate measurements on smooth or uneven surfaces
- Pull Rate Indicator to manually monitor and adjust the rate of pull
- Internal memory stores maximum pull-off pressure, pull rate, test duration and dolly size for up to 200 pulls
- NEW Field replaceable AAA alkaline batteries provide up to 16 hours of testing
- 10, 14, 20 or 50 mm dollies maximize capability and measurement resolution across a wide range of bond strengths
– 10 mm: 10000 psi (70 MPa)
– 14 mm: 6000 psi (40 MPa)
– 20 mm: 3000 psi (20 MPa)
– 50 mm: 480 psi (3.3 MPa)
– 50×50 mm: 375 psi (2.585 MPa) - User selectable measurement units: psi (pounds per square inch) or MPa (Megapascal)
- Every PosiTest® Adhesion Tester is calibrated and certified to ± 1% accuracy using a NIST traceable load cell
- Compatible with PosiSoft Desktop software for viewing, printing and storing measurement data
Adhesion testers include everything needed for testing: Manual Adhesion Tester, 3 AAA batteries, dollies, abrasive pad, cutting tool, glue with mixing sticks and palettes, cotton swabs, USB cable, PosiSoft® Software, instruction booklet, Certificate of Calibration traceable to NIST, two-year warranty, and a sturdy, lightweight carrying case
* 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).
Conforms to international standards including ASTM C1583/D4541/D7234/D7522, ISO 4624/16276-1, EN 1542/12004-2, AS/NZS 1580.408.5 and others
| Weight | 18 lbs |
|---|---|
| Dimensions | 18 × 18 × 12 in |
| Choose Manual or Automatic | PosiTest AT-A, PosiTest AT-M |
| Choose Application | ATM20, ATM50, ATM50T, ATM50C, ATA20, ATA50, ATA50T, ATA50C |
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Waterproof
Two easy open Press & Pull latches
Comfortable double-layered, soft-grip handle
Strong, lightweight
Two padlockable hasps
Meets airline regulations for carry-on luggage*
*Check with your airline for exact measurement requirementsEXTERIOR (L X W X D)
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PosiTest® AT Verifier – Adhesion Tester Accuracy Verification Kit
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Ideal for checking the accuracy and operation of adhesion testers and is an important component in fulfilling both ISO and in-house quality control requirements.
The PosiTest® AT Verifier and included documents allow the user to certify the accuracy of PosiTest® Adhesion Testers.
- High precision load cell and handheld smart sensor indicator
- Peak hold and real time reading display
- Bonded foil strain gages are hermetically sealed for protection against industrial environments
- Ready to use with all PosiTest® Pull-Off Adhesion Testers
- Ideal for field or laboratory use
- Fitted with a permanent steel 20 mm loading fixture (dolly). A conversion factor is used to verify other sizes
SKU: ATVERIFY
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