PositTest AT Pull-Off Adhesion Testers by DeFelsko

Measures adhesion of coatings to metal, wood, concrete and other rigid substrates Revolutionary self-alignment feature and pull rate indicator.

Available in Manual and Automatic Kits

Conforms to national and international standards including ASTM D4541/D7234, ISO 4624/16276-1, AS/NZS 1580.408.5 and others

Starting at $25.00

SKU
PositTest AT Adhesion Testers
Grouped product items
Product Name Qty
PosiTest AT-M Manual Adhesion Tester with 20 mm Kit
$1,895.00
PosiTest AT-M Manual Adhesion Tester with 50 mm Kit
$1,895.00
PosiTest AT-A Automatic Adhesion Tester with 20 mm Kit
$2,595.00
PosiTest AT-A Automatic Adhesion Tester with 50 mm Kit
$2,595.00
20 mm Dollies (pkg of 10) for PosiTest AT Adhesion Tester
$25.00
50 mm Dollies (pkg of 4) for PosiTest AT Adhesion Tester
$40.00
Adhesive Kit for PosiTest AT Adhesion Tester
$35.00
Drilling Template for 50 mm Dollies for PosiTest AT Adhesion Tester
$125.00

Description

Measures adhesion of coatings to metal, wood, concrete and other rigid substrates Revolutionary self-alignment feature and pull rate indicator. Conforms to national and international standards including ASTM D4541/D7234, ISO 4624/16276-1, AS/NZS 1580.408.5 and others

Available in 2 models... Manual or Automatic

Simple

  • Pull Rate Indicator allows operator to easily monitor and adjust the rate of pull in accordance with international test methods
  • Easily select dolly sizes, change measurement units or store readings, with the touch of a button
  • Conversion charts not required – tester automatically calculates pressure based on dolly size
  • Inexpensive, single-use dollies 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
  • Can be used in any position
  • Rugged carrying case
  • Two year warranty

 
Accurate

  • Every PosiTest Adhesion Tester pressure system is calibrated and certified to ± 1% accuracy using NIST traceable load cell
  • Self-aligning aluminum dolly enables accurate
    measurements on smooth or uneven surfaces
  • Hi-grade, industrial pressure sensor ensures
    continued accuracy
  • Conforms to national and international standards including ASTM D4541/D7234, ISO 4624/16276-1, AS/NZS 1580.408.5 and others


 Versatile

  • Internal Memory stores maximum pull-off pressure, rate of pull, test duration and dolly size
  • PosiSoft 3.0 - desktop software (PC/Mac) for downloading, viewing, printing and storing measurement data. Available as a free download.
  • LCD displays pressure value in psi or MPa
  • 10, 14, 20 or 50 mm dollies maximize capability
    and measurement resolution across a wide range of bond strengths

AT-A Automatic

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

■ Test with the simple push of a button.  No twisting, pumping or cranking. No valves to close, needles to reset, or scales to adjust
■ User selectable pull rates ensure compliance with international test methods for a variety of industries including metal, wood and concrete
■ Built-in rechargeable batteries perform over 200 tests per charge. Continue testing with AC power while batteries recharge. Supplied with universal AC Adapter
Rugged, portable instrument comes complete with convenient shoulder strap. Ideal for lab and field use.

 

Self-Alignment Feature

Unequal pulling force during testing caused by uneven adhesive bond lines and coating surfaces can result in random, unexplainable readings. To obtain more repeatable and meaningful adhesion measurements, it is imperative that the pulling force applied to the test dolly is uniformly distributed over the surface being tested.

Both the PosiTest AT manual and AT-A automatic 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.

 

AT Manual

■ Heavy-duty manual hydraulic pump designed to apply smooth and continuous pull-off pressure with a single stroke
■ Pull Rate Indicator to manually monitor and adjust the rate of pull
■ Includes built-in NiMH batteries with charger

 

 

 

 

Self-Alignment Feature

Unequal pulling force during testing caused by uneven adhesive bond lines and coating surfaces can result in random, unexplainable readings. To obtain more repeatable and meaningful adhesion measurements, it is imperative that the pulling force applied to the test dolly is uniformly distributed over the surface being tested.

Both the PosiTest AT manual and AT-A automatic 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.



 

Technical Data

Technical Data (AT-M manual and AT-A automatic)

Conforms to national and international standards including ASTM D4541/D7234, ISO 4624/16276-1, AS/NZS 1580.408.5 and others

Resolution: 1 psi (0.01 MPa)

Accuracy: ± 1% Full Scale

Adhesion
Strength

Dolly Size Max Pull-Off Pressure
10 mm 10000 psi 70 MPa
14 mm 6000 psi 40 MPa
20 mm* 3000 psi 20 MPa
50 mm** 500 psi 3.5 MPa
   *supplied with PosiTest AT    **requires 50mm kit

Warranty: 2 Years

 

 Both Kits include:  
  • Adhesion tester with digital display
  • 20 mm aluminum test dollies (20)
  • Abrasive pad
  • Cutting tool
  • Adhesive with mixing sticks and palettes
  • Cotton swabs
  • Instruction booklet
  • Certificate of Calibration traceable to NIST
  • Instructional Video
  • USB Cable
  • PosiSoft Software - available as a free download
  • Sturdy, lightweight carrying case
  • Two-year warranty
  • Built-in rechargeable NiMH batteries with recharger/AC power supply.
  • Shoulder strap (AT-A only)

Weight of Kit (with case) : 
12 lbs / 5.5 kg

Carrying Case Dimensions:
L – 17 in / 43 cm
W – 13 in / 33 cm
H – 6 in / 15 cm


Aluminum Test Dollies

Optional Accessories

 

50 mm Accessory Kit

■ Ideal for lower bond strength finishes such as coatings
on wood, concrete and plastic
■ Larger surface area of dolly provides improved low range
precision and repeatability
■ Range 50 – 500 psi (0.4 – 3.5 MPa)
■ Includes 50 mm stand-off, 50 mm hole saw and 50 mm
aluminum test dollies (12)
   

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)

   

Adhesive Kit

■ Additional adhesive, mixing sticks, palettes and cotton swabs
   
Dollies

■ Additional supplies of 10, 14, 20 and 50 mm dollies