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DeFelsko Pull-off Adhesion Testers | Positest AT

DeFelsko Pull-off Adhesion Testers | Positest AT

DeFelsko

DeFelsko Pull-off Adhesion Testers | Positest AT

Measures adhesion of coatings to metal, wood, concrete and other rigid substrates.

- 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

- Certificate of Calibration showing traceability to NIST included (Long Form)

Conforms to international standards including ASTM C1583/D4541/D7234, ISO 4624/16276-1, EN 1542/12004-2, AS/NZS 1580.408.5 and others

DeFelsko Pull-off Adhesion Testers | Positest AT General Information

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

AT-A

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

Order Code

ATA20

ATA50

ATA50T

(EN 12004-2)

50x50 mm

ATA50C

(ASTM C1583 and EN 1542)

Dolly size and stand-off*

20 mm

50 mm

Typical Applications

Higher bond strength coatings on metals

Lower bond strength coatings on wood, concrete and plastic

Concrete surfaces and overlays

Cementitious adhesives for tiles

Range

0.7 – 24 MPa
100 – 3500 psi
220 – 7550 N

0.1 – 3.8 MPa
16 – 560 psi
220 – 7550 N

0.1 – 3.0 MPa
13 – 440 psi
220 – 7550 N

0.1 – 3.8 MPa
16 – 560 psi
220 – 7550 N

Resolution

0.01 MPa (1 psi)

Accuracy

±1% Full Scale

Included Dollies

Ø20 mm (qty 20)
Aluminum

Ø50 mm (qty 8)
Aluminum

50x50 mm Plate (qty 4) with threaded post
Steel

Ø50 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, 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).

^ Upgrade to the Pelican® case by adding a '-P' to the Ordering Code.

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

Touch Screen Display

AT 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.

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)
- 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

4 Manual Models Available