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PosiTest AT-A Automatic Adhesion Tester by DeFelsko


The DeFelsko POSITEST AT-A AUTOMATIC ADHESION TESTER makes it easier and more efficient to measure and share reliable and relevant coatings adhesion test values on metal, wood, concrete, and other rigid substrates. The AT-A’s electronically-controlled hydraulic pump is push-button-operated, eliminating the need for manual priming, or pumping of the hydraulic system.

PosiTest AT-A is available in four models:

ATA20 - 20 mm stand-off and dollies

ATA50 - 50 mm stand-off and regular dollies

ATA50T - 50 x 50 mm stand-off and pull plates & posts for testing cementitious adhesives for tiles, in accordance with BS EN 12004-2: Adhesives for Ceramic Tiles; Test Methods

ATA50C - 50 mm stand-off and dollies for testing concrete surfaces and overlays, in accordance with ASTM C1583: Standard Test Method for Tensile Strength of Concrete Surfaces and the Bond Strength or Tensile Strength of Concrete Repair and Overlay Materials by Direct Tension

 

PosiTest AT-A also features a new high-resolution, impact and scratch-resistant, colour Touch Screen display with controls identical to the digital keypad. User-selectable pull rate, pull limit, dolly size, and hold time, ensure conformance to international standards for a wide range of test applications. The user can also select dolly size, change measurement units, and store readings which can be viewed or downloaded by USB on the computer, uploaded to PosiSoft Desktop software, or PosiSoft.net web-based app,  wirelessly using the free PosiTector App for your mobile device.

 

 

 

 

Additional new features of the Automatic Adhesion Tester include the ability to record Pass/Fail results and identify the type of coating failure – cohesion, adhesion, and glue failures.

 

Internal memory stores data for up to 100,000 pulls in up to 1000 batches, including maximum pull-off pressure, rate of pull, test duration, dolly size, and the pass/fail information.

 

The PosiTector App connects the AT-A via Bluetooth to your mobile device, where images can be added, annotated using drawing tools, test results and adhesion failures can be recorded, and data can be shared, backed-up, and synchronized. The new PosiTest AT-A also connects via WIFI with PosiSoft.net.

 

 

 

 

Both models of PosiTest Adhesion Tester have the PosiTest Self-Aligning Dolly System which allows the dolly-head to articulate in the actuator to compensate for uneven surfaces, making possible a proper, vertical pull, and ensuring reliable, repeatable test results.

The rubberized, impact-resistant end caps on the PosiTest Automatic Adhesion Tester provide an ergonomic grip, and stable, skid-resistant footing. AT-A also features a built-in, rechargeable NiMH battery, shoulder strap, and AC power option for greater versatility and convenience of use.

The PosiTest Automatic Adhesion Tester features user-selectable pull rate for conformance to international test standards for a wide range of applications. A full digital keypad allows the user to select pull-off pressure, pull rate, dolly size, as well as to change measurement units or store readings in the gauge. PosiTest Automatic Adhesion Tester also features a built-in, rechargeable NiMH battery, shoulder strap, and AC power option for greater versatility and convenience of use. The PosiTest AT has the PosiTest self-aligning dolly system: a ring of ball bearings in the grip mechanism of the actuator allow the dolly-head to articulate in order to compensate for uneven surfaces, making a proper, vertical pull possible and ensuring reliable, repeatable test results.
 

PosiTest Automatic Adhesion Tester shares many of the best features of the PosiTest Manual Adhesion Tester. Both models feature:

  • Portable; requires no external power source
  • Pull-rate indicator allows user to monitor and adjust rate of pull
  • Internal Memory stores maximum pull-off pressure, rate of pull, test duration, and dolly size 
  • Environmentally-sealed enclosure is weatherproof, dustproof, and shockproof; ingress protection IP65
  • Can be used in any position
  • 10, 14, 20, or 50 mm dollies maximize capability and accuracy 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)
  • Large, easy-to-read LCD display of pressure, rate of pull, and holds maximum test value
  • Calibration and certification to + 1% accuracy, using NIST-traceable load cell
  • 2-year manufacturer's warranty
  • Conforms to national and international standards including ASTM D4541/D7234, ISO 4624/16276-1, AS/NZS 1580.408.5 and others

Features Unique to the updated PosiTest AT-A Automatic Adhesion Tester include:

  • Electronically-controlled hydraulic pump; automatically applies smooth and continuous pull-off pressure, reducing effort and risk of user influence on pulling process
  • Pull-off strength of up to 3500 psi (24 MPa, 7550 N) with 20 mm dollies
  • Full digital keypad controls of all aspects of the adhesion test
  • Impact-resistant, high-resolution, colour Touch Screen display with fully redundant keypad, enables operation with or without gloves
  • User-selectable dolly size, pull rate, pull limit, pull-off pressure, hold time, memory storage at the push of a button
  • Wireless connection to your smart device using free PosiTector mobile app to create and share customized, professional PDF reports
  • Record results as Pass/Fail, and the nature of the failure – cohesion, adhesion, glue failure
  • Environmentally-sealed metal enclosure ingress-protected to IP65
  • Impact and scratch-resistant display
  • Heavy-duty hydraulic pump with high-grade industrial pressure sensor
  • New! Rubberized, impact-resistant end caps for sure, comfortable grip, and skid resistant footing
  • Built-in, rechargeable battery performs 200 or more test on a charge. Testing can continue on AC-power while battery is being recharged.
  • Universal AC-adaptor battery charger

Four kit options are available for the PosiTest AT-A Automatic Adhesion Tester:

 

Order Code ATA20 ATA50 ATA50T ATA50C
Dolly Size & Stand-off 20 mm 50 mm 50 x 50 mm 50 mm
Typical Applications Higher bond-strength coatings on metal substrates Lower bond-strength coatings on wood, concrete, & plastic

Cementitious adhesives for tiles

BS EN 12004-2

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 /  psi
Accuracy + 1% Full Scale
Included Dollies ø20mm Qty 20
Aluminum
ø50 mm Qty 8
Aluminum
50 x 50 mm Plate Qty 4 w threaded post
Steel
ø50 mm Qty 4 w  > 25 mm thickness
Steel
Cutting Tool 20 mm hole saw 50 mm hole saw  - - 50 mm diamond grit hole saw with arbor

 

The PosiTest AT-A Automatic Adhesion Tester Kit Includes: PosiTest AT-A Automatic Adhesion Tester with built-in rechargeable NiMH battery & charger; dollies with compatibly-sized stand-off and cutting tool; abrasive pad, adhesive with mixing sticks & palettes, cotton swabs, USB cable, PosiSoft Software, instruction booklet and video, shoulder strap, and Certificate of Calibration traceable to NIST in a sturdy, light-weight carrying case.

 

Optional AT-A Accessories include:

50 MM Conversion Kit (AT50KIT) interchangeable stand-off allows PosiTest ATM20 or ATA20 to pull 50 mm test dollies. Contains: 12 x 50 mm dollies, 50 mm stand-off, 50 mm hole saw.

 

20 MM Conversion Kit (AT20KIT) - interchangeable stand-off allows PosiTest ATM50 or ATA50 to pull 10, 14, and 20 mm dollies. Ideal for high bond-strength finishes such as coatings on metal. Contains: 20 mm stand-off, 20 mm hole saw, 20 x 20 mm aluminum test dollies.

 

50 mm x 50 mm Tile Conversion Kit (AT50TKIT) - Interchangeable stand-off allows a PosiTest ATM or ATA to pull 50 mm x 50 mm square dollies conforming to BS EN 12004-2. Ideal for measuring the tensile strength of ceramic tile cementitious, dispersion and reaction resin adhesives. Contains: 50 mm x 50 mm steel dollies (4), and 50 mm x 50 mm stand-off.

 

50 mm C1583 Conversion Kit (AT50CKIT) - Interchangeable stand-off allows a PosiTest ATM or ATA to pull 50 mm dollies conforming to ASTM C1583. Ideal for measuring the tensile strength of concrete surfaces, and concrete repairs and overlay materials. Contains: Includes 50 mm C1583 steel dollies (4), 50 mm diamond grit cutting tool with arbor and 50 mm C1583 stand-off. ** A drill is required, and is not included in this kit.

 

  • Drilling template and drill bits for 20 and 50 mm dollies
  • Adhesive kit
  • Additional dollies:
    • 10 mm standard for use on metal substrates; packs of 10 & 100
    • 14, 20 mm - for higher pull-off pressures on steel; packs of 10 & 100
    • 50 mm - for low bond-strength materials such as wood and concrete; packs of 4 & 50
    • 50x50 mm: 375 psi (2.585 MPa)
    • 50 mm: 480 psi (3.3 MPa)

To view Instructional Video for the PosiTest Adhesion Tester, please click here

Please click to download the product data sheet for the PosiTest AT- Automatic Adhesion Tester

 

Stone Tucker Instruments is able to re-certify your PosiTest Automatic Adhesion Tester

PDFs
PosiTest Adhesion Test Self-Alignment Feature-210-955692181.pdf
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