Overview
MH660 Portable Leeb hardness tester is an upgraded product launched by Mattel, focusing on user experience and functional innovation. It uses a color LCD screen, which can be clearly displayed in dim or strong light environments; the sealing metal shell is exquisitely designed to resist harsh environments such as oil stains and dust; it has multi-point calibrating function to reduce errors, and supports automatic identification of measurement directions and various hardness standards conversion. The instrument is powered by two AA batteries and supports Bluetooth communication. It is widely used in metal processing and manufacturing, special equipment failure analysis, commodity inspection and other fields. It is especially suitable for on-site hardness testing of large non-removable parts.
Features
1. Based on the Leeb hardness measurement principle, hardness and strength tests can be carried out on a variety of metal materials.
2. Adapt to six types of Impact devices, automatically identify the type of Impact device, no need to re-calibrate when replacing.
3. Automatic detection of Impact device status (connection, disconnection, failure, etc.).
4. Automatic identification of Impact direction (except G-type Impact device), support 360 ° full free measurement.
5. Using 320 × 240 TFT true color LCD screen, adjustable luminance, intuitive and clear information, adapt to dim and strong light environment.
6. With basic (single point) calibrating and unique multi-point calibrating function, the conversion Linear dispersion can be adjusted by multiple points to reduce errors.
7. The measurement results can be freely converted between various hardness systems such as Richter (HL), Brinell (HB), Rockwell B (HRB), Rockwell C (HRC), Rockwell A (HRA), Vickers (HV), and Shore (HS).
8. Built-in Richter hardness conversion function, support the mutual conversion between HLD value and HLC, HLG, HLDL, HLD + 15.
9. The upper and lower limits of hardness value can be preset, and the automatic alarm beyond the range is convenient for batch testing.
10. Support free switching between Chinese and English, menu-style operation, simple and convenient.
11. Can store 1000 sets (Impact times 32~ 1) hardness measurement data, each set of data contains single measurement value, average value, date/time, Impact direction, number of times, material, hardness and other information.
12. Powered by two ordinary AA batteries, it can work continuously for not less than 100 hours, and has power-saving functions such as automatic screen standby, hibernation, and shutdown.
13. Equipped with USB 1.1 interface for easy communication with PC.
14. Built-in Bluetooth module, wireless printing can be realized by connecting the printer through Bluetooth.
15. Equipped with PC-side data processing software, with functions such as transmission results, storage management, statistical analysis, and report generation.
16. Specially designed for harsh on-site environment, strong sealing, can resist moisture, sand, dust and oil pollution.
17. The dimensions are 120mm × 67mm × 31mm.
Principle
Based on the Richter hardness measurement principle, the impact body with a certain mass is impacted by the spring force at a certain speed by the impact device (such as D type). The hardness of the material is calculated by measuring the ratio of the rebound velocity to the impact velocity at a distance of 1mm from the specimen surface, which is proportional to the Richter hardness value (HL). The instrument can automatically identify the impact direction and convert the measured Richter hardness value into the Miscellaneous hardness standard through the built-in conversion function.
Applications
Mold cavities, bearings and other parts, Pressure Vessels, failure analysis of turbo-generators and their equipment, heavy workpieces, installed machinery or permanent assembly parts, workpieces with very small test space, occasions requiring formal original records of test results, material distinction in metal material warehouses, rapid inspection of large workpieces in a wide range of measurement parts
