UNI-T LEEB HARDNESS TESTER UT347A | 640×480 PIXELS CAMERA | PORTABLE HIGH PRECISION ROCKWELL VICKERS STEEL METAL HARDNESS TESTER DIGITAL | 6 KINDS OF HARDNESS VALUES MEASUREMENT HL, HB, HRC, HRB, HV, HS

UNI-T UT347A Leeb Hardness Tester

The UNI-T UT347A Leeb Hardness Tester is a portable and high-precision digital hardness testing instrument designed for fast and convenient hardness measurement of metal components and industrial equipment. It supports six hardness scales: HL, HB, HRC, HRB, HV, and HS, allowing professionals to evaluate different types of steel, cast iron, aluminium alloys, copper alloys, and other suitable metal materials.

Designed for both workshop and field applications, the UT347A combines a compact hardness tester with a colour TFT display, integrated 640 × 480 pixel camera, multiple impact device compatibility, statistical analysis, line charts, histograms, thermal printing, Bluetooth connectivity, USB communication, and PC software analysis.

The UT347A is particularly suitable for testing large equipment and components that are difficult to move to a laboratory, including pressure vessels, turbine sets, roller shafts, large machinery, automotive components, and industrial metal structures.

What Is the Purpose of the UNI-T UT347A?

The main purpose of the UNI-T UT347A Leeb hardness tester is to determine the hardness of suitable metal materials using the Leeb rebound hardness testing method. It provides quick on-site hardness measurements without requiring large laboratory equipment.

The tester can convert and display hardness results across six commonly used hardness scales: HL, HB, HRC, HRB, HV, and HS. It can also provide tensile strength information for applicable materials, helping technicians assess material condition during inspection and maintenance.

Its portable design makes the UT347A especially useful when large machinery, pressure vessels, turbines, shafts, or other heavy components cannot easily be transported to a conventional hardness-testing laboratory.

How to Use the UNI-T UT347A Leeb Hardness Tester?

1. Select the appropriate impact device: Choose the suitable impact device according to the shape, size, material, and testing position of the workpiece.
2. Select the material: Choose the appropriate material category, such as steel, cast steel, stainless steel, cast iron, aluminium alloy, copper alloy, or another supported material.
3. Select the hardness scale: Select the required hardness scale, such as HL, HB, HRC, HRB, HV, or HS.
4. Prepare the test surface: Ensure the measurement area is suitable for testing and free from excessive dirt, loose material, or surface conditions that could affect the result.
5. Position the impact device: Place the impact device correctly against the test surface according to the manufacturer's instructions.
6. Perform the measurement: Activate the impact device and allow the tester to calculate the hardness value.
7. Check the result: Read the hardness value on the colour TFT display and review the measurement information.
8. Use statistical measurement: Take multiple measurements where required and use the maximum, minimum, and average functions to evaluate the test results.
9. Review measurement trends: Use the line chart or histogram modes to understand the distribution and variation of hardness measurements.
10. Save and analyze the data: Store measurements in the internal memory and transfer data through Bluetooth, USB, or PC software when further analysis is required.
11. Print the results: Use the thermal printing function when a physical measurement record is required.

Important: For reliable hardness results, always use the correct impact device, material setting, testing orientation, and suitable test surface. Follow the manufacturer's instructions and use properly calibrated reference hardness blocks when verification is required.

Key Features of UNI-T UT347A

• Six hardness scales: Supports HL, HB, HRC, HRB, HV, and HS hardness values for versatile metal hardness testing.
• Multiple impact devices: One hardness tester can be equipped with up to seven different impact device types for different testing requirements.
• Automatic impact device identification: Automatically identifies the impact device when it is replaced, reducing the need for manual recalibration according to the supplied product information.
• High-resolution camera: The built-in 640 × 480 pixel camera can capture and store images associated with inspection work.
• Colour TFT display: The 2.8-inch 320 × 240 graphic colour display provides clear viewing of hardness readings and measurement information.
• Multiple measurement modes: Includes statistical, multi-unit, line chart, and histogram measurement modes.
• Statistical analysis: Provides maximum, minimum, and average hardness calculations for evaluating multiple measurements.
• Automatic limit alarm: Provides an alarm when measured hardness values exceed the configured upper or lower limits.
• Tensile strength measurement: Supports tensile strength indication for applicable materials and measurement conditions.
• Five impact directions: Supports testing orientations of 0°, 45°, 90°, 135°, and 180°.
• Thermal printing: Supports printing measurement results using 57mm thermal paper.
• Large data storage: Stores up to 900 groups of measurement data for inspection records and later analysis.
• Bluetooth connectivity: Allows compatible mobile devices to connect for data management and analysis.
• PC analysis software: Enables measurement data to be transferred to a computer for further analysis and documentation.
• USB communication: Supports USB connection for convenient data transfer and communication.
• Adjustable backlight: Allows display brightness adjustment for different working environments.
• Tri-colour LED indication: Provides visual status indication during operation.
• LED flashlight: Helps illuminate the inspection area when working in darker locations.
• Rechargeable battery: Uses a rechargeable lithium battery with a Type-C external power connection.
• Portable construction: Designed for field hardness testing of large and difficult-to-move industrial components.

Why Choose the UNI-T UT347A?

The UNI-T UT347A is an excellent choice for professionals who need fast and portable metal hardness testing without transporting large components to a laboratory. Its compact design makes it possible to perform hardness inspections directly on machinery, pressure vessels, turbines, shafts, and other industrial equipment.

Its support for six hardness scales provides flexibility across different materials and testing requirements. The ability to use multiple impact devices further expands the types of surfaces and components that can be inspected.

The UT347A also goes beyond basic hardness measurement by providing statistical analysis, line charts, histograms, data storage, thermal printing, Bluetooth connectivity, USB communication, PC software analysis, and image capture. These features make it suitable for professional inspection, quality control, maintenance, and documentation workflows.

Who Should Buy the UNI-T UT347A?

The UNI-T UT347A is suitable for professionals and organizations involved in metal inspection, quality control, manufacturing, maintenance, and industrial testing.

• Quality control inspectors
• Material testing technicians
• Mechanical engineers
• Manufacturing engineers
• Industrial maintenance technicians
• Automotive inspection professionals
• Shipbuilding inspection teams
• Petrochemical maintenance teams
• Power plant technicians
• Turbine maintenance professionals
• Pressure vessel inspectors
• Machinery manufacturers
• Metal fabrication companies
• Non-destructive testing professionals
• Engineering laboratories and workshops

Where Is the UNI-T UT347A Used?

• Petrochemical industry: Perform field hardness inspections on suitable industrial machinery, vessels, pipes, and metal components.
• Electric power industry: Inspect turbines, shafts, generators, pressure equipment, and other suitable metal components.
• Automotive industry: Check the hardness of suitable engine components, shafts, gears, and other metal parts.
• Shipbuilding: Perform hardness testing on suitable ship structures, machinery components, and metal parts.
• Machinery manufacturing: Verify hardness of manufactured components and production parts during quality control.
• Pressure vessel inspection: Perform portable hardness testing on large pressure vessels that are difficult to move.
• Turbine maintenance: Inspect turbine sets and large rotating components during maintenance and service operations.
• Metal fabrication: Verify hardness of suitable steel, cast steel, stainless steel, aluminium alloys, and other supported materials.
• Field inspection: Perform on-site hardness measurements where transporting large equipment to a laboratory is impractical.

Frequently Asked Questions About UNI-T UT347A