PosiTest AT - Adhesion Tester

PosiTest AT - Adhesion Tester

Low to High Bond Strength Measurements Across Rigid Substrates

Overview

 The PositTest Adhesion Tester (PosiTest AT) measures the force required to pull a specified test diameter of coating or material away from its substrate using hydraulic pressure. Maximize measuring capacity across low to high bond strengths for coatings to metal, concrete, wood, or plastic, or tile. Adapt to any situation with the Self Aligning Dolly on smooth or uneven surfaces.  Automatic and Manual Models Available

 

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

Features

  • 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
  • Calibrated and certified to ± 1% accuracy using a NIST traceable load cell
  • 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. 
    - 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)

**Custom 10 and 14 mm dollies are available for special applications (compatible with 20 mm stand off)- 10 mm: 10000 psi (70 MPa)

PosiTest AT Self-Alignment Feature

Both the PosiTest AT-M Manual and PosiTest AT-A Automatic models compensate for misalignment. The self-aligning, quick-coupling actuator and spherical articulating dolly head enable uniform distribution of the pulling force over the surface being tested, preventing a one-sided pull-off.

 

 

 


PosiTest AT-A Automatic

  • Electronically controlled hydraulic pump automatically applies smooth and continuous pull-off pressure. 
  • Built-in rechargeable battery performs 200+ tests per charge. Continue testing with AC power while the battery recharges.
  • Impact and scratch resistant color touch screen with keypad for operation with or without gloves

-Swipe horizontally to navigate between views or vertically to move between batch readings. Alternatively, the keypad can be used for navigation and selection.

  • Rotating display for horizontal and vertical use
  • User adjustable pull rate, pull limit and hold time
  • Memory 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

  • Record Nature of the Fracture

-Differentiate Between Cohesive and Adhesive Fractures as well as Glue Failures.

-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 in accordance with ASTM D4541 and ISO 4624.

PosiTest AT-M Manual

  • Manual hydraulic pump designed to apply smooth and continuous pressure with a single stroke
  • Field replaceable AAA alkaline batteries provide up to 16 hours of testing. No recharging capacity in Manual Model.
  • High-contrast, easy to read color display

 

 

 

Applications

Typical applications for the PosiTest AT vary depending on their Stand off Size 

20mm Kit
  • Ideal for measuring higher bond strength coatings on metals
  • Can be used with optional 10 and 14 mm dollies
50mm Kit
  • Ideal for measuring lower bond strength coatings on wood, concrete, and plastic
50 x 50mm Tile Kit
  • Ideal for measuring the tensile strength of ceramic tile cementitious, dispersion, and reaction resin adhesives
50mm C1583 Kit
  • Ideal for measuring the tensile strength of concrete surfaces, concrete repairs, and overlay materials

 

Software and Hardware

PosiSoft Desktop

Powerful desktop software for downloading, archiving, and reporting measurement data. No internet connection required.

PosiTector App

An easy-to-use mobile app (iOS/ Android) that connects to your PosiTector Advanced, PosiTector Smartlink, or PosiTest AT-A.

PosiSoft USB

A simple gage interface to retrieve data in a manner similar to a flash drive. No software to install or internet connection required.

Technical Specifications

Technical Specifications

Positest AT Manual Model
SKU:  CT-DF-AT-M20 CT-DF-AT-M50 CT-DF-AT-M50C CT-DF-AT-M50T
Typical Application:
 Higher bond strength
coatings on metals		 Lower bond strength
coatings on wood, concrete, and plastic		 Cementitious
adhesive for tiles		 Concrete surfaces
and overlays
Range:  0.7 – 20 MPa
100 – 3000 psi		 0.1 – 3.3 MPa
16 – 480 psi		 0.1 – 3.3 MPa
16 – 480 psi		 0.1 – 3.3 MPa
16 – 480 psi
Included Dollies: Ø20 mm (qty 20)
Aluminum		 Ø50 mm (qty 8)
Aluminum		 50 x 50 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 N/A 50 mm diamond grit hole saw with arbor
Adhesive: ResinLab EP11HT
2-Part Epoxy		 ResinLab EP11HT
2-Part Epoxy		 ResinLab EP11HT
2-Part Epoxy		 ResinLab EP11HT
2-Part Epoxy
Resolution: 0.01 MPa (1 psi)
Accuracy: ±1% Full Scale

 

Positest AT Automatic Model
SKU: CT-DF-AT-A20 CT-DF-AT-A20 CT-DF-AT-A20 CT-DF-AT-A20
Typical Application:
 Higher bond strength
coatings on metals		 Lower bond strength
coatings on wood, concrete, and plastic		 Cementitious
adhesive for tiles		 Concrete surfaces
and overlays
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
Included Dollies: Ø20 mm (qty 20)
Aluminum		 Ø50 mm (qty 83)
Aluminum		 50 x 50 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 N/A 50 mm diamond grit hole saw with arbor
Adhesive: ResinLab EP11HT
2-Part Epoxy		 ResinLab EP11HT
2-Part Epoxy		 ResinLab EP11HT
2-Part Epoxy		 ResinLab EP11HT
2-Part Epoxy
Resolution: 0.01 MPa (1 psi)
Accuracy: ±1% Full Scale

 

Kit Includes

  • PosiTest AT (Manual or Auto)
  • Protective Case (upgrade to Pelican Case available for Automatic option)
  • Dollies (Kit Specific; refer to 'Applications' Section)
  • Cutting Tool for Test Area (where applicable)
  • Adhesive (Kit Specific)

Optional Accessories

PosiTest AT Calibrator

-Ideal for verifying the accuracy and operation of adhesion testers and is an important component in fulfilling both ISO and in-house quality control requirements

-Peak hold and real time reading display

 

Pelican Case for PosiTest AT-A

-Heavy-duty, waterproof Pelican case complete with a custom foam insert to securely hold your PosiTest AT-A instrument. Cases can be purchased as an upgrade or accessory

-Strong, lightweight, and waterproof

 

50mm C1583 Conversion Kit

-Ideal for measuring the tensile strength of concrete surfaces and concrete repairs and overlay materials. Includes 50 mm C1583 steel dollies (4), 50 mm diamond grit cutting tool with arbor and 50 mm C1583 stand-off

-Conforms to ASTM C1583

 

50 mm x 50 mm Tile Conversion Kit

-Ideal for measuring the tensile strength of ceramic tile cementitious, dispersion and reaction resin adhesives. Includes 50 mm x 50 mm steel dollies (4), and 50 mm x 50 mm stand-off

-Conforms to BS EN 12004-2

 

Dollies

-Available in 10 mm (10 or 100ct), 14 mm (10 or 100ct), 20 mm (10 or 100ct), 50 mm (4 or 50ct), 50 x 50 mm (4ct), 50 mm C1583 (2ct), 50 x 50 mm Plate (4ct)

-Loading fixtures, stubs for adhesion testing.

 

Drilling Template for 50 mm Dollies

-Drilling template and drill bits to isolate test area, ideal for thicker coatings on concrete                                                                                                                                 

-Includes (10) drill bits 5/32" (4 mm)

 

20 mm Conversion Kit

-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)

-Interchangeable stand-off allows a PosiTest ATM50 or ATA50 to pull 10, 14 and 20 mm dollies

 

50 mm Conversion Kit

-Ideal for lower bond strength finishes such as coatings on wood, concrete and plastic. Larger Surface area provides improved low-range precision and repeatability. Includes 50 mm stand-off, 50 mm hole saw and 50 mm aluminum test dollies (12)

-Allows a PosiTest ATM20 or ATA20 to pull 50 mm dollies

 

Adhesive Kit

-ResinLab EP11HT 2-Part Epoxy with additional glue, mixing sticks, palettes and cotton swabs

-Epoxy Yield: 20 mm: ~100 dollies; 50 mm: ~16 dollies; 14 mm: ~200 dollies; 10 mm: ~400 dollies

Product Literature

Description Part # Saved Price Select Option Add to

PosiTest AT Unit
DeFelsko PosiTest Adhesion Tester - Automatic
Model #
CT-DF-ATA
$2,995.00
DeFelsko PosiTest Adhesion Tester - Manual
Model #
CT-DF-ATM
$2,245.00

Accessories
DeFelsko PosiTest AT Conversion Kit
Model #
CT-DF-ATKIT
$300.00
DeFelsko Additional 10mm Dollies
Model #
CT-DF-DOLLY1
$50.00
DeFelsko Additional 14mm Dollies
Model #
CT-DF-DOLLY
$50.00
DeFelsko Additional 20mm Dollies
Model #
CT-DF-DOLLY2
$35.00
DeFelsko Additional 50mm Dollies
Model #
CT-DF-DOLLY5
$50.00
DeFelsko 50mm C1583 Dollies 4ct CT-DF-DOLLY50C
$75.00
DeFelsko 50mm x 50mm Tile Dollies 4ct CT-DF-DOLLY50T
$165.00
DeFelsko 50mm x 50mm Dolly Plate 4ct CT-DF-PLATE50T
$115.00
DeFelsko PosiTest AT Pelican Case - Automatic CT-DF-CASEATAB-P
$370.00
DeFelsko Additional Adhesive, Mixing Sticks, Palettes, Cotton Swabs CT-DF-ATADHESIVEKIT
$35.00
DeFelsko Drilling Template for 50mm Dollies CT-DF-TMPLTAS
$135.00
Discontinued - Defelsko Positest AT Verifier CT-DF-ATVERIFY
Discontinued Item
Defelsko AT Calibrator CT-DF-ATC1
$2,820.00
Defelsko AT Calibrator Probe Only CT-DF-PRBATC
$2,495.00