Uni-T UT347A Leeb Hardness Tester

The Uni-T UT347A Leeb Hardness Tester is a professional-grade, portable instrument engineered for precise material hardness evaluation using the Leeb rebound method. This device is specifically designed for industrial quality control, maintenance, and engineering applications where testing large, heavy, or installed components is required. It provides reliable measurements across multiple hardness scales, ensuring versatility for various metallic materials in manufacturing and metal processing environments.

Advantages

This hardness tester offers exceptional flexibility through its support for six different hardness scales and five distinct impact directions, allowing for accurate readings regardless of the component's orientation. The device features automatic probe recognition, which simplifies setup and reduces the risk of measurement errors. With its integrated high-resolution camera, internal memory for 900 data sets, and advanced connectivity options including Bluetooth and USB, users can efficiently document, store, and analyze measurement data. The inclusion of a built-in thermal printer enables immediate on-site reporting, while the intuitive interface and multi-mode display options, such as histograms and line graphs, facilitate comprehensive quality assessment.

Suitable for

• Testing large or heavy industrial components like turbines, pressure vessels, and shafts
• Quality control in metal processing and manufacturing facilities
• Field maintenance and inspection of installed machinery
• Hardness evaluation of steel, stainless steel, cast iron, aluminum, and copper alloys

When it may not be suitable

This device is primarily intended for metallic materials and may not provide accurate results on non-metallic surfaces, soft plastics, or rubber. Additionally, it is not designed for testing very thin or small parts that do not meet the minimum mass and thickness requirements for the Leeb rebound method.

Key specifications

• Hardness scales: HL, HB, HRC, HRB, HV, HS
• Tensile strength measurement: σb
• Impact angles: 0°, 45°, 90°, 135°, 180°
• Display: 2.8″ TFT color screen
• Connectivity: Bluetooth, USB, PC software
• Memory: Up to 900 data sets
• Power: 2500 mAh rechargeable Li-Po battery
• Printing: Integrated thermal printer for 57 mm paper

How to use

To begin, ensure the appropriate impact probe is connected to the device. Place the probe firmly against the surface of the material to be tested, ensuring the surface is clean and free of debris. Trigger the impact mechanism according to the device instructions. The hardness value will be displayed immediately on the screen. You can switch between different hardness scales or measurement modes using the navigation menu. Data can be saved to the internal memory, printed via the thermal printer, or transferred to a computer or mobile device for further analysis.

What to consider before purchase

• Verify that the material you intend to test is compatible with the Leeb hardness testing method
• Ensure the surface of the test object is sufficiently smooth and clean for accurate rebound readings
• Check if the size and mass of your components meet the minimum requirements for stable measurement
• Consider the need for additional probe types if your specific application requires specialized geometry

Usage recommendations: Always perform a calibration check using the provided standard block before starting a series of measurements to ensure maximum accuracy. Keep the impact probe clean and free of oil or dust to maintain consistent performance.