Universal hardness tester(Electric)HBRVD－187.5D1type

Universal hardness tester(Electric)HBRVD－187.5D1The model adopts a rotating test force transformation mechanism and an optical measurement system, and is equipped with a microscope measurement device on the body to improve work efficiency. During use, in addition to the Rockwell hardness test requiring manual zeroing of the dial, the Brinell hardness test and Vickers hardness test measure the diameter and diagonal of the indentation through a microscope, without any human error. It is an economical Brinell three purpose hardness tester.

1、 Universal hardness tester (electric)HBRVD－187.5D1Type technical parameters

1. Initial testing force(N)：98

2. Experimental force:

Vickers hardness test(N)：294、588、980

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

Brinell hardness test(N)：306、613、1839

3. Microscope magnification:37.5X75×

4. Minimum division value of micrometer drum:

At 37.5 times, it is0.004mm

At 75 times, it is0.002mm

5. Total test force holding time(s)：1-30

6. Maximum allowable height of test piece(mm)：170

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

8. Dimensions of hardness tester(mm)：463×241×660

9. Power supply voltage:AC220V

10. Light source voltage:5V/5W

11. Instrument weight(kg)：75

2、 Universal hardness tester (electric)HBRVD－187.5D1Range of hardness testing

1. Rockwell hardness test:

(70-85)HRA

(30-100)HRB

(20-67)HRC

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

2. Brinell hardness test

(8-650)HB

indicating accuracy(δ/％):±2.5, indication repeatability(Hcf/％):≤3.0

3. Vickers hardness test

(14-1000)HV

indicating accuracy(δ/％):±2, indication repeatability(Hcf/％):≤2.5