HT-225
TEST HAMMER
The concrete test hammer is an instrument which is easy to use, for quick and approximate
measurement of the resistance to pressure of manufactured concrete products. The principles
on which it works are based on the rebound impact of a hammer on a piston which rests
against the surface of the concrete products. The Greater the resistance of the concrete,
greater is the rebounded impact. By reading this rebound impact on a scale and relating it
to curves or table on graphs supplied with the instrument, the resistance to compression in
MPa or PSI can be found.
Technical Specification
Model	HT-225
Measuring Ranges	10-60 MPa
Impact Energy	2.207+/-0.1J (0.225 kgf.m)
Length of Spring Stretch	75+/-0.3 mm
The Static Friction of Pointer Slider	0.65 N ~ 0.15 N
Radius of Spherical Tip	25 mm +/- 1 mm
The Average Rebound Values on Steel Anvil	80 +/-2
Housing Dimensions	Ø54 * 280 mm
Weight	≈1 kg