Pull Off Tester - DY-225

Pull Off Tester - DY-2 Family


The Proceq DY-2 Family of automated pull-off testers covers the complete range of pull-off applications with unmatched ease of operation and the ability to store a complete record of the test.

Pull-off or adhesion testing is one of the most widely used test methods in the construction industry. This is reflected in the huge number of standards dedicated to the method covering applications such as adhesion of various concrete coatings to testing the tensile strength of concrete.


Major influences on the result of the pull-off test

It has long been known that one of the major influences on the result of a pull-off test is the operator influence in the application of a constant load rate. The DY-2 with its integrated feedback controlled motor removes this variable completely by providing a fully automated test at a constant load rate which can be verified.


Adhesion testing

The strength of the tensile shows the composition of the surface straight after measuring. Like this, concrete coating can be tested due to the tensile strength which also shows the concrete's casting.





The DY-2 is further unique in that it records every single test parameter required by the specification.

  • Time and date of the test
  • Test disc size
  • Maximum load applied
  • Automatic calculation of bond strength
  • Applied load rate with graphical record
  • Complete time of test
  • Failure mode

The following standards can be applied to the pull off tester:

  • EN 1542
  • EN 1015-12
  • EN 1348
  • ISO 4624
  • BS 1881
    Part 207
  • ASTM D 4541
  • ASTM C 1583
  • ASTM D 7234-05
  • ASTM D 7522
  • ZTV-SIB 90
Product Variations
  • DY-206 has increased accuracy for low strength applications
    such as testing adhesive strength of mortars and renders. 
  • DY-216 covering most applications.
  • DY-225 for very high strength applications such as testing of fibre reinforced polymers bonded to concrete structures or testing the bond strength of repair and overlay materials.
  • Pull off tester Dyna Estrich is specially designed to measure the adhesive strength of floor coatings.

                                             Working Range

Tensile ForceTest Disc Ø 50mm
DY-2060.6 - 6 kn0.3 - 3.1 MPa
135 - 1349 Ibf44 - 443 psi
DY-2161.6 - 16 kn0.81 - 8.1 MPa
360 - 3597 Ibf118 - 1182 psi
DY-2252.5 - 25 kN1.3 - 12.7 MPa
562 - 5620 Ibf185 - 1847 psi
Technical Data
DY-2 Units
Maximum Tensile Force DY-206: 6 kN, 1349 lbf
DY-216: 16 kN, 3597 lbf
DY-225: 25 kN, 5620 lbf
Calibration accuracy EN ISO 7500-1 Class 1 (±1% from 20% of max. Force)
Memory capacity 100 measurements
Battery capacity

1500 mAh, 3.7V
(min. 80 measurements)

Charger connection USB type A (5V, 500mA)
Weight 4.5 kg
Dimensions of housing 109 x 240 x 205.5 mm
Operating temperature -10 to 50°C (14 to 122°F)
Storage temperature

-10 to 70°C (14 to 158°F)

Pull off tester Dyna Estrich
Display in N/mm2 based on dia. 50 mm test disc
Tensile force max. 4400 N (990 lbf)
Tensile strength 2.2 N/mm2 (320 psi)
Accuracy < 3 %
Tensile stroke 20 mm (0.79 in.)
Total weight 2.8 kg (6 lbs; 3 oz)

Service and Warranty Information

Proceq is committed to providing complete support for the DY-2 testing instrument by means of our global service and support facilities. Furthermore, each instrument is backed by the standard Proceq 2-year warranty and extended warranty options.

Standard warranty:

  • Electronic portion of the instrument: 24 months
  • Mechanical portion of the instrument: 6 months