INNOVATEST offers a wide range of portable hardness testing instruments. Most of the common testing methods are represented in this catalogue. Portable instruments often
offer an excellent alternative if the workpiece is too heavy or too large to be tested on a bench hardness tester.
Its often understand by the public that portable hardness testing instruments are less reliable or less accurate than bench type hardness testers.
This however is a misunderstanding.
Portable hardness testers, considering to be manufactured according to the applicable standards, are as accurate as bench hardness
tester. The importance of portable instruments is that they should be applied in a correct manner, respecting the testing
conditions as advised for the praticular testing method. Misuse is often laying on the basis of wrong values obtained by portable testing instruments. Another recent problem is that there are many cheap, poor
quality portable testing instruments available on the market. Such instruments offer promising specifications which in many cases cannot be reached or can be reached but only for a short period of the ‘’life time’’ of such instrument.
It is strongly recommended to buy portable testing instruments that are covered by a decent service system offering regular checks and which have a proven track
record of reliability and quality.
Portable testing methods
Most common testing methods are the Leeb hardness, rebound technology, or the UCI ultrasonic hardness test. While the rebound technology conforms to the ASTM and DIN standards, UCI offers the advantage of being more suitable for light weighted and thin components.
Barcol and Webster are based on impressing the material with a sharp indentor, portable Rockwell or portable Brinell are more or less spin-offs from the applicable standard methods of such scales.