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mvip@mitech-ndt.com
1 Introduction
This hardness tester is designed for testing metallic materials, the hardness of which ranges from very
low to very high values. Hardness testing can be performed directly on-site and in any position. Typical
applications are large, heavy workpieces which could only be transported to a hardness testing machine
in a laboratory with great difficulty. It is especially suitable for applications in which standard indentation
hardness testing is either not feasible or not economical.
This hardness tester comprises an indicating device and an impact device. It is based on the rebound
hardness testing method according to Leeb. It is for testing the hardness of all material surfaces over a
large range of hardness quickly and independently.
1.1 Features of the instrument
The instrument represents a user-friendly microprocessor-controlled measuring system characterized by
the following benefits:
Wide measuring range
Based on the principle of Leeb rebound testing method, it can measure the hardness value of all metallic
materials. It can also measure the tensile strength of many metallic materials.
Impact device
Support seven types of impact device. Type of impact device automatically identified.
Impact direction correction
Impact direction automatically detected and corrected (after base calibration, except type G) , high
measuring accuracy in every impact direction, convenient measurement in any position.
Scale
Integrated conversion of the measured values to other popular hardness scales, e.g. HRC (Rockwell),
HRA, HRB, HV (Vickers), HB (Brinell), HS (Shore), HL (Leeb), Rm (Tensile strength for steel).
Calibration
Base calibration function and multi-point calibration function.
HLX conversion function
HLX conversion function to convert HLD values to HLC, HLG, HLDL and HLD+15, and vice versa.
Tolerance limit
Upper and lower limit can be set. It will alarm automatically when the test value exceeding the limit.
Display
Color TFT display (320×240 TFT LCD) with adjustable backlight, allow the user to work at worksites with
low visibility.
Memory
Integrated memory – Non-volatile, 500 series of measured values including each individual measured
value, mean value, testing date, impact direction, impact times, material and hardness scale etc..
Power saving
Two AA size alkaline batteries as the power source. Continuous operating period of no less than 100
hours (default brightness setting). Display Standby and Auto Power Off functions to save power.
Real time clock
The instrument clock keeps running tracking the time.
Communication
USB communication port. Online transfer of the measured data to PC or laptop via USB.
Robust design
Robust design allow the user to work at dusty worksites .
