HT225 Manual Concrete Hardness tester
Introduction
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.
Specification
Model HT-225
Measuring ranges 10-60MPa
Impact energy 2.207±0.1J (0.225Kgf.m)
Length of spring stretch 75±0.3mm
The static friction of pointer slider 0.65N~0.15N
Radius of spherical tip 25mm±1mm
average rebound values on steel anvil 80±2
Housing dimensions Φ54*280mm
Weight ≈1kg