Rockwell hardness tester HRS-150

benchtopdigital display

Rockwell hardness values are expressed as a combination of a hardness number and a scale symbol representing the indenter and the minor and major loads. The hardness number is expressed by the symbol HR and the scale designation. UNITEDTEST hardness testers are based on the same construction principle of the COMP series which are already well known for their economic, reliability and easy using. Principle: 1. The indenter moves down into position on the part surface 2. A minor load is applied and a zero reference position is established 3. The major load is applied for a specified time period (dwell time) beyond zero 4. The major load is released leaving the minor load applied SPECIFICATION 1),advanced testing technique and high quality LCD displaying, except the test table moving up and down, all others realized automatic action, then avoids the operation and readout error; 2), Equipped with a built-in printer, hardness testing result can be output by printing. 3), The RS232 Hyper Terminal setting is for the Functional expansion by the user 4), Wide scale (HRA, HRB, HRC, HRD, HRE, HRF, HRG, HRH, HRK, HRN, HRT); 5), Exchange hardness values among hardness scales: (HRA, HRB, HRC, HV, HB);