DeFelsko ATM50C PosiTest AT-M Manual Pull-off Adhesion Tester with 50mm Dollies C1583 Kit
Typical Applications: Concrete Surfaces & Overlays
Range: 0.4 - 3.5 MPa / 50 - 480 psi
Conforms with ASTM D4541 / D7234, ISO 4624, SSPC-CS 23.00/AWS C2.23/NACE No. 12
The DeFelsko AT-M PosiTest AT-M Manual Pull Off Adhesion Tester with 50mm C1583 Kit measures adhesion of coatings to metal, wood, concrete and other substrates - Revolutionary self-alignment feature and pull rate indicator brings new meaning to adhesion measurements. A manual hydraulic pump is designed to apply smooth and continuous pressure with a single stroke.
The DeFelsko ATM50C PosiTest AT-M Manual Pull Off Adhesion Tester with 50mm C1583 Kit features an environmentally sealed enclosure. It is weatherproof, dust proof and shockproof. Meeting or exceeding IP65 rating.
Kit Contents
The DeFelsko ATM50C (ASTM C1583 and EN 1542) PosiTest AT-M Adhesion Tester 50mm C1583 Kit includes everything needed for testing:
- PosiTest AT-M Manual Pull-Off Adhesion Tester
- Built-in rechargeable NiMH battery with charger
- C1583 stand-off (NOTE: drill required-not included)
- 50mm C1583 steel dollies (4)
- 50mm diamond grit cutting tool with arbor
- Abrasive pad, cotton swabs, glue with mixing sticks and palettes
- PosiSoft Software and USB Cable
- Certificate of Calibration traceable to NIST
- Sturdy, lightweight carrying case and instruction booklet
- Two-year warranty
Features
Simple
- Easily select dolly sizes, change measurement units, or store readings with the touch of a button
- Inexpensive, single-use dollies and plates eliminate cleaning for re-use and can be kept as a permanent record
- Each kit comes with everything needed for testing
Durable
- Environmentally sealed enclosure—weatherproof, dustproof and shockproof - meets or exceeds IP65
- Hard-shell carrying case included, with optional upgrade to a heavy-duty Pelican case (Automatic models only)
- Two year warranty
Accurate
- Calibrated and certified to ± 1% accuracy using a NIST traceable load cell
- Certificate of Calibration showing traceability to NIST included
- Self-aligning dolly enables accurate measurements on smooth or uneven surfaces
- Conforms to national and international standards including ASTM C1583/ D4541/D7234, ISO 4624/16276-1, BS EN 12004-2, AS/NZS 1580.408.5, and others
Versatile
- Select from four stand-offs to suit nearly any application
- Internal memory stores maximum pull-off pressure, rate of pull, test duration, and dolly size
- 10 mm, 14 mm, 20 mm, 50 mm, 50 x 50 mm Tile, and 50 mm C1583 dollies maximize capability and measurement resolution across a wide range of bond strengths
Powerful
- Sealed USB port for fast, simple connection to a PC
- Includes PosiSoft suite of software for viewing and reporting data
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
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)
- 50x50 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
* 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
PosiSoft Suite of Software
Accessories
DeFelsko Conversion Kit AT20KIT for PosiTest Adhesion Testers
Order Code: AT20KIT- Interchangeable stand-off allows a PosiTest ATM20 or ATA20 to pull 10, 14 and 20 mm dollies
- Ideal for high bond strength finishes such as coatings on metal
- Includes 20 mm stand-off, 20 mm hole saw and 20 mm aluminum test dollies (20)
DeFelsko Conversion Kit AT50KIT for PosiTest Adhesion Testers
Order Code: AT50KIT- Interchangeable stand-off allows a PosiTest ATM20 or ATA20 to pull 50 mm dollies
- Ideal for lower bond strength finishes such as coatingson wood, concrete and plastic
- Larger surface area of dolly provides improved low range precision and repeatability
- Includes 50 mm stand-off, 50 mm hole saw and 50 mm aluminum test dollies (12)
DeFelsko Conversion Kit AT50CKIT for PosiTest Adhesion Testers
Order Code: AT50CKIT- Ideal for measuring the tensile strength of concrete surfaces and concrete repairs and overlay materials
- Conforms to ASTM C1583
- Includes 50 mm C1583 steel dollies (4), 50 mm diamond grit cutting tool with arbor and 50 mm C1583 stand-off
NOTE: Drill required (not included)
DeFelsko Conversion Kit AT50TKIT for PosiTest Adhesion Testers
Order Code: AT50TKIT - Interchangeable standoff allows a PosiTest ATM50 or ATA50 to pull 10, 14 and 20 mm dollies
- Ideal for high bond strength finishes such as coatings on metal
- Includes 20 mm stand-off, 20 mm hole saw and 20 mm aluminum test dollies (20)
Drilling Template for 50 mm Dollies
Order Code: TMPLTAS- Drilling template and drill bits to isolate test area, ideal for thicker coatings on concrete
- Includes (10) drill bits 5/32" (4 mm)
Glue Kit
Order Code: ATADHESIVEKIT- ResinLab EP11HT 2-Part Epoxy
- Additional glue, mixing sticks, palettes and cotton swabs
Pelican Case for PosiTest AT Pull-Off Adhesion Testers
Order Code: CASEATAB-P- Heavy-duty, waterproof Pelican cases complete with a custom foam insert to securely hold your PosiTest instrument
Related Products
DeFelsko ATA20 PosiTest AT-A
Automatic Pull-off Adhesion Tester
- 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
- User adjustable pull rate, pull limit, and hold time
Downloads
F.A.Q.
Do your instruments require any formal training for use? Do you offer ‘demo’ models?
No. Our instruments are designed for simple operation, feature easy-to-use menus, both full and quick instruction manuals, and helpful videos. In lieu of demonstration models, we provide unlimited technical support via telephone and/or email, and a limited 30-day money back guarantee.
Is the DeFelsko PosiTest AT calibrated at the factory?
The DeFelsko PosiTest AT arrives fully calibrated and ready to measure. A Long-Form Certificate of Calibration traceable to NIST or PTB is included, which documents actual readings taken by your instrument at our calibration laboratory on standards traceable to a national metrology institute. Beware of ‘Certificates’ or ‘Certificates of Conformance’ offered by competitors. These typically do not include actual instrument readings, and are often insufficient to meet common quality requirements.
Is the DeFelsko PosiTest AT portable, and suitable for use in the field?
Absolutely. With an environmentally-sealed, metal enclosure, heavy-duty hydraulic pump and a high grade industrial pressure sensor, both the Manual and Automatic DeFelsko PosiTest AT are built to last. Weatherproof, dustproof and shockproof, they can be used indoors, outdoors and in all types of weather (meets or exceeds IP 65). For added utility and convenience, DeFelsko PosiTest AT-A Automatic models also include a handy shoulder strap and rubberized grips.
Does the DeFelsko PosiTest AT include steel loading fixtures (dollies)?
The DeFelsko PosiTest AT is supplied with self-aligning dollies that are precision-manufactured from strong and lightweight aluminum alloy (6061-T6). As a lower-cost alternative to steel loading fixtures, factory aluminum dollies are a single-use/consumable item and ideal for keeping as a permanent visual record of testing.
Do you have a recommended adhesive for my particular application?
The ResinLab EP11HT epoxy adhesive supplied with the DeFelsko PosiTest AT is simple to use and suitable for testing a wide range of coating types. In some instances, specialized coatings will require a more specialized adhesive.
Is the DeFelsko PosiTest AT-A more accurate than the DeFelsko PosiTest AT-M?
The certified accuracy of both DeFelsko PosiTest AT models is identical. However, the fully automatic design of the DeFelsko PosiTest AT-A provides improved measurement consistency by eliminating the potential for operator influence from the test process.
What is the difference between the 20mm and the 50mm loading fixtures?
The 50 mm dolly is commonly recommended for use with concrete, wood and composite substrates, and measures coatings with expected adhesion values between 50 psi and 560 psi (50 - 500 psi for AT-M models). The 20 mm dolly is recommended for testing coatings applied to metals or with expected adhesion values greater than 500 psi.
Can I use the DeFelsko PosiTest AT-A on curved surfaces?
Yes. Feedback from our customers is that the DeFelsko PosiTest AT gages are suitable for testing most internal or external pipe applications greater than 200 mm in diameter. In such cases, the maximum glue gap between the surface of the 20 mm dolly and the coating is 0.5 mm. For smaller pipe diameters, depending on the expected pull-off strength of the coating, it may be possible to use a 10 mm or 14 mm dolly. External diameters can be decreased to as low as 50 mm and 100 mm, for the 10 mm and 14 mm dollies, respectively. Manufacturers do do not provide or support the use of curved dollies for adhesion testing. In addition to affecting the surface area used in calculating pull-off strengths and the direction of the force lines (creating unwanted shear forces), most adhesion testing standards specifically call for the use of flat dollies.
How many measurements can I take with the DeFelsko PosiTest AT-A on a single battery charge?
The rechargeable battery pack (user replaceable) in the DeFelsko PosiTest AT-A can perform over 200 tests on a single charge. Use the included AC adaptor to continue testing as the battery recharges.
What is the lowest adhesion strength that the DeFelsko PosiTest AT-A can measure?
When utilized with a 50mm dolly, the DeFelsko PosiTest AT is in a priming state until reaching a priming pressure of 50 psi. It is only after the priming pressure is reached that the instrument begins calculating and displaying the pull rate. While it is possible to obtain readings below this priming pressure with the AT-M model, the AT-A automatic does not allow the operator to build priming pressure very slowly and is therefore not suitable for use below the priming pressure of 50 psi. Note that all reported adhesion values (including those obtained below the priming pressure) are subject to the DeFelsko PosiTest AT gage’s full-scale accuracy of ± 1% (± 30 psi, AT-M; ± 35 psi, AT-A).
Is there a faster curing adhesive than the epoxy supplied with the DeFelsko PosiTest AT?
The versatile epoxy adhesive supplied with the DeFelsko PosiTest AT reaches full cure within 24 – 48 hours. Operators who require faster cure times should evaluate other adhesives for their compatibility with both the coating being tested and our aluminum test dolly. Cyanoacrylate (‘super glue’) type adhesives are often sufficient for lower pull-off strengths.
Can I use the DeFelsko PosiTest AT on flexible or brittle substrates?
The DeFelsko PosiTest AT is designed for use with rigid, structural substrates. A flexible substrate can adversely impact test accuracy and repeatability. Furthermore, use of the DeFelsko PosiTest AT for measuring the adhesion of coatings applied to a brittle substrate typically results in the destruction of the substrate material, making it challenging to quantify the coating-substrate bond strength.
