leeb hardness tester HM-6561

An impact body with a spherical test tip made of tungsten carbide is propelled against the sample surface by a spring force and then rebounds back. At a distance of 1mm from the sample surface, the impact and rebound velocity of the impact body are measured by the following method: A permanent magnet embedded in the impact body, when passing through the coil in its coil holder, induces in the coil an electric voltage proportional to the velocities of the magnet.

1 Feature and Specifications

1.1 Typical Applications

* Die cavity of molds

* Inspection of bearing and other mass produced parts on a production line

* Failure analysis of pressure vessel, steam generator and other equipment

* Inspection of installed machinery, permanent parts of assembled systems and heavy work pieces.

* Testing surface of a small hollow space

* Material identification in the warehouse of metallic materials

* Rapid testing in large range and multi-measuring areas for large-scale work piece

1.2 Testing Features

* Palm size for narrow space.

* Test at any angle, even upside down.

* Direct display of hardness scales HRB, HRC, HV, HB, HS, HL.

* Large memory could store 250 groups including single measured value, impact direction, material and hardness scale etc.

* User recalibration function allowed.

* Can communicate with PC computer for statistics and printing by the optional cable.

* Manual or automatic shut down.

* Low battery indication.

1.3 Technical Specifications

Display: 12.5mm LCD with back light

Accuracy: Display error ±0.8% at LD=900

Measuring range: 200-900L

Conversion: HL-HRC-HRB-HB-HV-HSD

Materials: 9 different common materials

With RS232C interface

Memory: 250 data can be stored and re-readable

Impact device: D Will handle the majority of hardness testing applications.

Weight: 75g

Power supply: 2x1.5V AAA size battery

Dimension: 146×65×36mm

Weight: 130g (not including batteries)

Working temperature: - 10℃~+50℃

Storage temperature:- 30℃~+60℃;

Relative humidity: ≤90%