Blowe hardness testerHBRV（M）－187.5The model has an intuitive LCD screen display and a microcontroller control system, which enables automated operation of hardness testing. The machine has a built-in printer that records the main technical data throughout the entire testing process. In addition to manual lifting of the test bench, automated operations such as the application and removal of test force, and direct display of hardness values have been fully realized.

Main technical parameters of digital Blowe hardness tester

1. Initial testing force(N)：98

2. Total test force

a、 Vickers hardness test(N)：294、588、980

b、 Rockwell hardness test（N）：588、980、1471

c、 Brinell hardness test(N)：306、613、1839

3. Microscope magnification:37.5X75×

4. Hardness reading method:LCD

5. Measuring eyepiece:Automatic digital encoder

6. Minimum resolution of hardness indication value(HR)：0.1

7. Total test force holding time(s)：1-60

8. Maximum allowable height of test piece(mm)：180(Roche)135(Vickers, Brinell)

9. Distance from the center of the pressure head to the body(mm)：140

10. Dimensions of hardness tester(mm)：463×215×700

11. Power supply voltage:AC220V

12. Light source voltage: 5V/5W

13. Instrument weight(kg)：75

14. Hardness testing range

15. Rockwell hardness test

(70-85)HRA

(30-100)HRB

(20-67)HRC

Indication accuracy: ±1HR Repeatability of indication values: 0.8HR

16. Brinell hardness test

(8-650)HB

Indication accuracy(δ/％):±2.5 Repeatability of indication values(Hcf/％):≤3.0

17. Vickers hardness test

(14-1000)HV

Indication accuracy(δ/％):±2 Repeatability of indication values(Hcf/％):≤2.5