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 High precision hardness tester THL280 

Features

LCD display of 128×64 matrix with back-light, showing all functions and parameters.

Converts to all common hardness scales (HV,HB,HRC,HRB,HRA,HS).

English displaying and easy and convenient menu operation.

Powerful PC Software available and USB 2.0 interface & with the USB Protective Membrane.

7 types of Impact Device optional, which don't need to be recalibrated when changing them.

Memory of 600 groups data（impact times:32～1）.

Lower limit setting and sound alarm.

Material of “cast steel” is added; HB values can be read out directly when D/DC impact device is used to measure “cast steel” work piece.

Printer be separated from main unit and copies of testing results can be printed as required.

AA battery can easy change and transport.

Inbuilt function of Software Calibration.

Specifications

Hardness scale                           HL, HB, HRB, HRC, HRA, HV, HS

Memory                                      48～600 groups （impact times: 32～1）

Measuring range                        HLD（170～960）See below table 1 and table 2

Accuracy                                    ±4HLD (760±30HLD) error of displayed value

                                                    4HLD (760±30HLD) repeatability of displayed value

Standard Impact Device               D

Optional Impact Devices              DC/D+15/G/C/DL

Max. Workpiece Hardness           996HV(For Impact Devices D/DC/DL/D+15/C)

                                                     646HB(For Impact Device G)

Min. Radius of Workpiece        Rmin = 50mm (with special support ring Rmin= 10mm)

Min. Workpiece weight                2~5kg on stable support

                                                     0.05~2kg with compact coupling

Min. Workpiece thickness            5mm (Impact Devices D/DC/DL/D+15)

                                                     1mm (Impact Device C)

                                                     10mm (Impact Device G)

Min. thickness of hardened surface  0.8mm

Power                          AA battery

Continuous Working time           approx. 100 h (no back light off)

Charging time                             2-3.5 h

Operating temperature                0~40℃

Relative humidity                       ≤90%

Overall dimensions                    125*67*31mm (main unit)

Weight                                        0.3kg (main unit)

Standard Configuration