PosiTest AT-A

Pull-off Adhesion Testers

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

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)

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

Features

Select from four Stand-offs – 20 mm, 50 mm, 50×50 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)

Applications

Technical Data

Model Guide	ATA20	ATA50	ATA50T (EN 12004-2)	ATA50C (ASTM C1583 and EN 1542)
Dolly Size and Stand-off	20 mm	50 mm	50×50 mm	50 mm
Typical Applications	Higher bond strength coatings on metals	Lower bond strength coatings on wood, concrete, and plastic	Cementitious adhesives 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
Resolution	0.01 MPa (1 psi)
Accuracy	±1% Full Scale
Included Dollies	Ø20 mm (qty 20) Aluminum	Ø50 mm (qty 8) Aluminum	50×50 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	—–	50 mm diamond grit hole saw with arbor