Precision Metal Hardness Testing from Any Angle
The LS251D is a portable digital Leeb hardness tester designed for accurate and versatile measurement of metal materials. Featuring an advanced D-type impact device and a digital probe with a built-in orientation sensor, it delivers reliable results with ±6HL accuracy at any angle up to 360°. Its ability to convert between multiple hardness scales (HL, HV, HB, HS, HRA, HRB, HRC) makes it an essential tool for quality control, material inspection, and field testing.
Key Features
- High-Precision Digital Probe: Utilizes advanced digital technology for superior accuracy and stability.
- 360° Measurement Capability: A built-in orientation sensor automatically compensates for gravity, allowing for accurate readings in any direction.
- Multiple Hardness Scales: Easily switch between 7 different hardness scales (HL, HV, HB, HS, HRA, HRB, HRC) and measure tensile strength (σb).
- Quality Control Function: Set upper and lower limits to quickly determine if a material meets qualification standards.
- Statistical Analysis: Automatically calculates the maximum, minimum, and average values from the last 9 measurements.
- User Calibration: Allows users to calibrate with a standard block to eliminate measurement errors.
Specifications
| Hardness Scales | HL, HV, HB, HS, HRA, HRB, HRC |
| Measurement Range | HLD(170-960), HV(83-976), HB(30-651), HRC(17.6-68.5), HS(26.4-99.5), HRB(13.5-100), HRA(60-85.8) |
| Resolution | 1HL |
| Accuracy | ±6 HL (typical) |
| Repeatability | 6HL |
| Display | 240 x 160 dot matrix LCD |
| Power Supply | 2 x AA alkaline dry batteries |
| Host Size | 142 x 72 x 28 mm |
| Probe Size | 148 x 31 x 25 mm |
| Weight | 247g |
What's in the Box
- 1 x Leeb Hardness Tester
- 1 x Standard Leeb Hardness Block
- 1 x Nylon Brush
- 1 x Small Support Ring
- 1 x User Manual
- 1 x Certificate / Warranty card