DeFelsko PosiTest AT-A Automatic Pull-off Adhesion Tester
The PosiTest AT Series measures the force to pull a specified test diameter of coatings or material away from its substrate using hydraulic pressure.
Measures adhesion of coatings to metal, wood, concrete and other rigid substrates.
- Portable - requires no external power sources - ideal for field or lab use
- Select from four Stand-offs - 20 mm, 50 mm, 50x50 mm Tile and 50 mm C1583
- Environmentally sealed enclosure – weatherproof, dustproof and shockproof - meets or exceeds IP65
- Inexpensive, single-use dollies eliminate cleaning for re-use and can be kept as a permanent record
- 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
- Calibrated and certified to ± 1% accuracy using a NIST traceable load cell
- Conforms to international standards including ASTM C1583/D4541/D7234/D7522, ISO 4642/16276-1, BS EN 12004-2, AS/NZS 1580.408.5 and others
Simple:
- Inexpensive, single-use dollies eliminate cleaning for re-use and can be kept as a permanent record
- 10, 14, 20 or 50 mm dollies maximize capability and measurement resolution across a wide range of bond strengths
Durable:
- Environmentally sealed enclosure – weatherproof, dustproof and shockproof - meets or exceeds IP65
Accurate:
- Self-aligning aluminum dolly enables accurate measurements on smooth or uneven surfaces
- Calibrated and certified to ± 1% accuracy using a NIST traceable load cell
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
- 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
- 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
- Pressure system is calibrated and certified to ± 1% accuracy using a NIST traceable load cell
- Compatible with PosiSoft Desktop, PosiSoft.net and PosiTector App (Apple iOS and Android)
- Software Updates via web keep your instrument current
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
Specifications:
| Model | ATA20 | ATA50 | 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 Cementitious 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) | |||
| Accuracy | ± 1% Full Scale | |||
| Included Dollies | ∅20 mm (qty 20) Aluminum | ∅50 mm (qty 8) Aluminum | 50x50 mm Plate (qty 4) with threaded post Steel | ∅50 mm (qty 4) with ≥ 25 mm thickness steel |
| Cutting Tool | 20 mm hole saw | 50 mm hole saw | -- | 50 mm diamond grit hole saw with arbor |
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 and video, 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, BS EN 12004-2, AS/NZS 1580.408.5 and others
