Adhesion Testers | Buy DeFelsko ATA50 PosiTest AT-A Automatic Pull-off Adhesion Tester with 50mm Dollies Kit, # ATA50A-B, for Coatings on Concrete, Wood and Plastic, Range 0.4 - 3.8 MPa / 50 - 560 psi / 100

Typical Applications: Coatings on Concrete, Wood and Plastic

Range 0.4 - 3.8 MPa / 50 - 560 psi / 100 - 7550 N

Electronically controlled hydraulic pump applies smooth and continuous pull-off pressure at a user-specified rate

Conforms with ASTM D4541 / D7234, ISO 4624, SSPC-CS 23.00/AWS C2.23/NACE No. 12

The DeFelsko ATA50 PosiTest AT-A Automatic Pull-off Adhesion Tester ATA50A-B with 50mm Kit measures the force required to pull a specified test area of coating away from a substrate using hydraulic pressure. An electronically controlled hydraulic pump automatically applies smooth and continuous pull-off pressure. The pump greatly reduces user effort and the risk of influencing the pulling process.

The AT-A's built-in rechargeable battery performs over 200 tests per charge. The supplied AC adapter / charger allows you to continue testing with AC power while the battery recharges.

The DeFelsko Positest AT-A features an environmentally sealed enclosure. It is weatherproof, dustproof and shockproof. Meeting or exceeding IP65 rating.

Kit Contents

The DeFelsko ATA50 PosiTest AT-A Adhesion Tester 50mm Kit includes everything needed for testing:

PosiTest AT-A Automatic Pull-Off Adhesion Tester
Built-in rechargeable NiMH battery with charger
50mm stand-off
50mm dollies (8)
50mm cutting tool
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, instruction booklet and shoulder strap
Two-year warranty

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Features
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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 enclosureweatherproof, 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-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)

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 enclosureweatherproof, dustproof and shockproofmeets 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

* 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 Drivestored 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

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

Use the touch screen to interact with menu options. Swipe horizontally to navigate between views or vertically to move between batch readings. Alternatively, the keypad can be used for navigation and selection.
User adjustable dolly size, pull rate,pull limit and hold time.
Batch summary provides an at-a-glance review of test results.
View test parameters and reading results. Reading is recorded as pass or fail based on set test parameters. The pass/fail results can be revised.
Notes can be added for each reading.
Include a note for a batch (group) of readings.
Record the nature of failure - cohesive, adhesive and glue failures.

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.

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PosiSoft Suite of Software
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Four FREE and unique ways to view and report your PosiTector and PosiTest data. Learn More

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FAQ's - Frequently Asked Questions
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Click to View DeFelsko PosiTest AT Frequently Asked Questions

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Optional Accessories
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DeFelsko Dollies for PosiTest AT Adhesion Testers
Loading fixtures, stubs for adhesion testing. Choose from the following sizes and quantities:

Size	Quantity	Order Code
10 mm	10	DOLLY10
14 mm	10	DOLLY14
20 mm	10	DOLLY20
50 mm	4	DOLLY50

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DeFelsko Dolly Multipacks for PosiTest AT Adhesion Testers
Larger quantity of dollies at a reduced cost. Select from the following multipacks

Size	Quantity	Order Code
10 mm	100	DOLLY10APK100
14 mm	100	DOLLY14APK100
20 mm	100	DOLLY20APK100
50 mm	50	DOLLY50APK50

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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)

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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)

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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)

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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)