Pocket Size Integrated Leeb Hardness Testers DHT-300 Integration Digital Hardness Test Equipment
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Leeb Hardness Meter tester DHT-300 Integration digital Hardness test of metal materials
Features
Pocket size, easy to operate
Based on the hardness HL value, conversion can be performed to HRB, HRC, HV, HB, and HS
For most metals
Automatic orientation correction
USB interface for both recharging and data transfer to PC
Internal memory in a batch of 1250 average readings
Lower and upper limits setting with Low-High display judge
Works on 3.7V rechargeable lithium-battery with working more than 16 hours continuously
Auto shutdown after 5 minutes
Conforming to ASTM A 956
Technical Specification
Testable workpiece
Testable workpiece
Testable workpiece
Hardness parameter |
HL, HRC, HRB, HV, HB, HS |
Measuring range / metallic materials |
See the table 1 |
Display |
112 64 LCD with backlight |
Display functions D |
Impact direction, Battery power consumption, Hardness scale, Hardness value, Average value, Max/Min value, Material, Type of impact device |
Accuracy Statistics |
Within 0.5% (HLD=800) |
Testable workpiece |
Thickness coupled: Minimum 3 mm or more (Except with Impact device G:10mm) |
Mass: 5kg or more (2-5kg on solid support ,<2kg with couplant paste) | |
Surface roughness: Ra 10 | |
Radius (convex/concave): Rmin=30mm or more (<30mm with support ring ) | |
Test Points |
5mm or more from the edge of the sample, 3mm or more to each of the tested points |
Memory |
1250 groups |
Output |
USB port |
Impact device (standard) |
D |
Optional Impact Device |
DL / C |
Power |
3.7V rechargeable lithium-battery with working more than 16 hours continuously |
Operating temperature |
-20 ~ +40 |
Overall dimensions |
158mm 41mm 26mm |
Weight |
120g |
Table 1 (For impact device D)
Materials |
HL |
HRC |
HRB |
HB |
HS |
HV |
ST & Cast ST |
300~890 |
19.8~68.5 |
59.6~99.6 |
80~651 |
26.4~99.5 |
83~976 |
CWT Stell |
300~840 |
80~898 |
||||
Stainiless |
300~800 |
20.4~67.1 |
85~655 |
85~802 |
||
GC Iron |
444~650 |
46.5~101.7 |
140~334(30 D2 ) |
|||
NC Iron |
416~658 |
19.6~62.4 |
140~384(30 D2 ) |
|||
Cast Alum |
200~560 |
30~159 (10D2 ) |
||||
Brass |
200~550 |
13.5~95.3 |
40~173 (10D2 ) |
|||
Bronzes |
300~700 |
60~290 (10D2 ) |
||||
Copper |
200~690 |
45~315 (10D2 ) |