AJH360 model Portable Hardness Tester
Working Principle
The impact body, which is equipped with tungsten carbide, impacts into the work piece and rebounds back. The rebound and impact velocities are measured at the 1mmpoint from the work piece in the following way: the integrated permanent magnet will produce directly proportional voltage with the impact velocity. The Leeb hardness values are calculated by the following formula:
HL=1000×( Vb / Va )
In Which： HL: Leeb hardness values
Vb : the voltage produced during the rebound of impact body
Va : the voltage produced during the impact of impact body
The Leeb hardness values can be converted to other hardness scales directly, such as HV, HRC, HRB, HB and HS.
Specification
|
Measuring Method |
Leeb Hardness method |
|
Hardness Scale |
HL, HB, HRB, HRC, HV, HS, σb |
|
Measuring Range |
HLD(200-960), HRC(19.8-68.5), HRB(13.5-100), HB(30-651), HV(80-976), HS(26.4-99.5), σb (375-2639) |
|
Impact Device |
D type impact device standard, optional C/G/DC/DL/D+15 |
|
Accuracy |
±6HLD (HLD=800), Repeatability : less 6HLD (HLD=800) |
|
Measuring Direction |
360 degree by manual setting |
|
Material |
Steel& Cast Steel, Stainless Steel, GC iron, NC iron, Cast Aluminum alloy, Macht metal, Copper-tin alloy, Brass. |
|
Resolution |
1HL,1HV, 1HB, 0.1HRB, 0.1HRC, 0.1HS |
|
Display |
High Contrast Segment Liquid Crystal Display (LED Backlight) |
|
Data Memory |
100 groups (each group include 1-7 testing result and 1 MEAN value) |
|
Communication |
USB port (Standard) and Blue tooth (Optional) |
|
Printer |
Thermal Printer with blue tooth (optional) |
|
Power |
2 AA batteries |
|
Working Temperature |
-10°C to +50°C |
|
Size |
153 × 76×37 (mm) (H×W×D) |
|
Weight |
280g include batteries |
|
Standard |
GB/T 17394-1998, ASTM A956 |
|
Standard Accessories |
Optional Accessories |
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AJH360 Main Unit |
Impact Device: D/C/G/DC/DL/D+15 |
|
D Type Impact Device |
Standard Test Block |
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Standard Test Block |
Blue tooth module & Thermal Printer |
|
Rubber Sheath |
Belt |
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Small Support Ring |
Standard Support Ring |
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Cleaning Brush |
Small Support Ring |
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2 AA Batteries |
Special Support Ring |
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Data Software |
|
|
Communication Cable |
|
|
Operating Manual |
|
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Instrument Case |
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