PCE-HT-225A Hardness Test Instrument
PCE-HT-225A is a hardness test instrument or concrete test hammer, also called a concrete rebound hammer or Swiss hammer, used for non-destructive measurements of surface hardness and compression strength. Suitable for use with concrete, rock and building materials, this manufacturer-calibrated manual rebound hammer is economical, practical and easy to use.
The quality of concrete is judged mainly on the basis of compressive strength, since compressive strength is directly responsible for the structural behavior and durability of concrete constructions. The compressive strength is designated by a sequence of letters and numbers. For example, "B 25" is considered normal concrete with a compressive strength of 220 kg / cm² or 3100 psi. There are many intermediate values up to the highest strength class of "B 55." Thus, using this concrete hardness tester, you can quickly, easily and accurately classify concrete strength.
For psi concrete measurement, download the chart to convert rebound value to psi. Optional test anvil to verify accuracy listed under accessories.
|Test range||10 ... 60 MPa or 100 ... 600 kg/cm² (1450.38 ... 8702.26 psi)|
|Impact energy||2.207 J or N-m / 1.6278 ft-lb|
|Impact stroke||75 ± 0.3 mm / 2.95 ± 0.012 in|
|Spring rigidity||785 J or N-m / 578.99 ft-lb|
|Average rebound value (for calibration)||80 ± 2|
|Radius of spherical tip||25 ± 1 mm / 0.99 ± 0.04 in|
|Adhesion of the measurement tip||0.65 ... 0.15 N|
|Rebound value range||0 to 100 (without dimensions)|
|Conversion tables||On back of instrument and in user manual; to convert rebound values indicated to kg/cm² and MPa (with introduction of impact angle)|
|Weight||Approx. 1 kg / 2.21 lbs|
|Dimensions||Approx. 66 x 280 mm / 2.6 x 11.02 in|