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Pull-Off Adhesion Tester – PosiTest AT

Measures Coating Adhesion Strength On Rigid Substrates

Model No. :

Brand : Defelsko

The PosiTest AT series encompasses a range of high-precision digital pull-off adhesion testers engineered to quantify the bond strength of coatings and linings on various rigid substrates. Available in both Automatic (AT-A) and Manual (AT-M) versions, these instruments provide accurate, traceable, and non-destructive testing results critical for quality control across multiple industries.

Self-aligning dolly ensures accurate perpendicular measurement
Calibrated to $\pm1%$ $accuracy$ with $NIST$ $traceability$
Durable weatherproof enclosure exceeds $IP65$ $standards$

Models

Variants

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+ Standards

+ Resources

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Features

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)

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/D7522, 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

Technical Specifications

Application & Standards

Accessories

Software

PosiSoft Desktop

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

Simple, intuitive user interface
Import readings directly from the gage via USB, WiFi, or legacy PosiSoft Desktop versions
Fully integrates with PosiSoft.net—backup and synchronize jobs, batches, readings, and report templates to the cloud.

PosiTector App

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

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.

PosiTector Developer Resources

From wired USB to WiFi wireless technology, DeFelsko instruments offer data management solutions for even the most advanced software integrations. Accessing your stored or live streaming data is simpler and more flexible than ever before. PosiTector and PosiTest AT-A instruments have the ability to integrate with third-party software, drones, ROVs, PLCs, and robotic devices using several industry-standard communication protocols.

FAQs

Can $I$ $use$ $the$ $PosiTest$ $AT$ – $A$ $on$ $curved$ $surfaces$ $like$ $pipes$ ?

Yes. The $PosiTest$ $AT$ $gages$ $are$ $suitable$ $for$ $testing$ $most$ $external$ $or$ $internal$ $pipe$ $applications$ $greater$ $than$ $200$ $mm$ $in$ $diameter$ , $provided$ $the$ $glue$ $gap$ $between$ $the$ $surface$ $and$ $the$ $20$ $mm$ $dolly$ $is$ $max$ $0.5$ $mm$ .

How $many$ $measurements$ $can$ $I$ $take$ $with$ $the$ $PosiTest$ $AT$ – $A$ $on$ $a$ $single$ $battery$ $charge$ ?

The $built$ – $in$ $rechargeable$ $Li$ – $ion$ $battery$ $in$ $the$ $PosiTest$ $AT$ – $A$ $can$ $perform$ $over$ $250$ $tests$ $per$ $charge$ . $The$ $USB$ – $C$ $port$ $also$ $allows$ $for$ $simultaneous$ $charging$ $and$ $operation$ .

What $is$ $the$ $lowest$ $adhesion$ $strength$ $that$ $the$ $PosiTest$ $AT$ – $A$ $can$ $measure$ ?

When $using$ $a$ $50$ $mm$ $dolly$ , $the$ $AT$ – $A$ $enters$ $a$ $priming$ $state$ $until$ $it$ $reaches$ $16$ $psi$ . $The$ $automatic$ $model$ $is$ $therefore$ $not$ $suitable$ $for$ $use$ $below$ $16$ $psi$ $due$ $to$ $the$ $minimum$ $pulling$ $pressure$ $required$ $to$ $initiate$ $the$ $test$ $sequence$ .

Is $there$ $a$ $faster$ $curing$ $adhesive$ $than$ $the$ $epoxy$ $supplied$ $with$ $the$ $PosiTest$ $AT$ ?

Yes. $While$ $the$ $supplied$ $epoxy$ $reaches$ $full$ $cure$ $in$ $24$ – $48$ $hours$ , $operators$ $may$ $use$ $Cyanoacrylate$ $(’super$ $glue’$ $type)$ $adhesives$ $for$ $faster$ $cure$ $times$ , $especially$ $for$ $lower$ $pull$ – $off$ $strength$ $coatings$ .

What $is$ $the$ $minimum$ $substrate$ $thickness$ $needed$ $to$ $test$ $with$ $the$ $PosiTest$ $AT$ ?

There $is$ $no$ $specified$ $minimum$ $thickness$ . $However$ , $since$ $deformation$ $of$ $the$ $substrate$ $can$ $affect$ $results$ , $ISO$ $16276$ $recommends$ $a$ $minimum$ $steel$ $thickness$ $of$ $3$ $mm$ $\text{($\text{\sim1/8″}$)}$ $to$ $reduce$ $this$ $risk$ . $Thinner$ $substrates$ $should$ $be$ $secured$ $to$ $a$ $backing$ $fixture$ .

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Pull-Off Adhesion Tester – PosiTest AT

Measures Coating Adhesion Strength On Rigid Substrates

Measures Coating Adhesion Strength On Rigid Substrates

Measures Coating Adhesion Strength On Rigid Substrates

Simple

Durable

Accurate

Versatile

Powerful

PosiSoft Desktop

PosiTector App

PosiSoft USB

PosiTector Developer Resources

Can I use the PosiTest AT–A on curved surfaces like pipes?

How many measurements can I take with the PosiTest AT–A on a single battery charge?

What is the lowest adhesion strength that the PosiTest AT–A can measure?

Is there a faster curing adhesive than the epoxy supplied with the PosiTest AT?

What is the minimum substrate thickness needed to test with the PosiTest AT?

Simple

Durable

Accurate

Versatile

Powerful

PosiSoft Desktop

PosiTector App

PosiSoft USB

PosiTector Developer Resources

Can I use the PosiTest AT–A on curved surfaces like pipes?

How many measurements can I take with the PosiTest AT–A on a single battery charge?

What is the lowest adhesion strength that the PosiTest AT–A can measure?

Is there a faster curing adhesive than the epoxy supplied with the PosiTest AT?

What is the minimum substrate thickness needed to test with the PosiTest AT?

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Can $I$ $use$ $the$ $PosiTest$ $AT$ – $A$ $on$ $curved$ $surfaces$ $like$ $pipes$ ?

How $many$ $measurements$ $can$ $I$ $take$ $with$ $the$ $PosiTest$ $AT$ – $A$ $on$ $a$ $single$ $battery$ $charge$ ?

What $is$ $the$ $lowest$ $adhesion$ $strength$ $that$ $the$ $PosiTest$ $AT$ – $A$ $can$ $measure$ ?

Is $there$ $a$ $faster$ $curing$ $adhesive$ $than$ $the$ $epoxy$ $supplied$ $with$ $the$ $PosiTest$ $AT$ ?

What $is$ $the$ $minimum$ $substrate$ $thickness$ $needed$ $to$ $test$ $with$ $the$ $PosiTest$ $AT$ ?

Can $I$ $use$ $the$ $PosiTest$ $AT$ – $A$ $on$ $curved$ $surfaces$ $like$ $pipes$ ?

How $many$ $measurements$ $can$ $I$ $take$ $with$ $the$ $PosiTest$ $AT$ – $A$ $on$ $a$ $single$ $battery$ $charge$ ?

What $is$ $the$ $lowest$ $adhesion$ $strength$ $that$ $the$ $PosiTest$ $AT$ – $A$ $can$ $measure$ ?

Is $there$ $a$ $faster$ $curing$ $adhesive$ $than$ $the$ $epoxy$ $supplied$ $with$ $the$ $PosiTest$ $AT$ ?

What $is$ $the$ $minimum$ $substrate$ $thickness$ $needed$ $to$ $test$ $with$ $the$ $PosiTest$ $AT$ ?