Portable Hardness Tester (AHT320) Features: ● Small volume with light weight, our leeb hardness tester is convenient for taking. Its outline dimensions are212mm×80mm×32mm. ● Large screen(128×64 dot matrix LCD), showing all functions and parameters. ● Test at any angle, even upside down. ● Wide measuring range. It can measure the hardness of all metallic materials. Direct display of hardness scales HRB, HRC, HV, HB,HS, HL and three types of strength values immediately. ● Seven impact devices are available for special application. Automatically identify the type of impact devices. ● Large capacity memory could store 500 groups (Relative to average times32～1 ) information including single measured value, mean value, testing data, impact direction, impact times, material and hardness scale etc. ● Upper and lower limit can be preset. It will alarm automatically when the result value exceeding the limit. ● Battery information indicates the rest capacity of the battery and the charge status. ● User calibration function. ● USB port with the PC humanity multi-functions data proceeding software. ● High speed thermal printer support the immediate printing function. It can save data permanently. ● NI-MH rechargeable battery as the power source. With rechargeable battery, charging for three hours, it can use for two months.Charge circuit integrated inside the instrument. Continuous working period of no less than 150 hours (EL off and no printing). ● Auto power off to save energy. ● Excellent after-sale service system for high quality products--two years’ guarantee and all life maintenance. Easy to buy and comfortable to use. Technical Specifications ● Measuring range : HLD ( 170 ～ 960 ) HLD ● Measuring direction : 360 ° ● Hardness Scale : HL , HB , HRB , HRC , HRA , HV , HS ● Display : dot matrix LCD , 128 × 64 dots ● Data memory : 500 groups max. ( relative to impact times 32 ～ 1 ) ● Printing paper: width is ( 57.5 ± 0.5 ) mm, diameter is 30mm ● Battery pack: 6V NI-MH ● Battery charger: 9V/500mA ● Continuous working period : about 150 hours ( With backlight off, no printing ) ● Communication interface : USB1.1 ● Outline dimensions : 212mm × 80mm × 32mm ● Weight: 650g No. Type of impact device Hardness value of Leeb standard hardness block Erro of displyed value Reapeatability 1 D 760 ± 30HLD 530 ± 40HLD ± 6 HLD ± 10 HLD 6HLD 10HLD 2 DC 760 ± 30HLD 530 ± 40HLD ± 6 HLDC ± 10 HLDC 6HLD 10HLD 3 DL 878 ± 30HLD 736 ± 40HLD ± 12 HLDL 12HLDL 4 D+15 766 ± 30HLD 544 ± 40HLD ± 12 HLD+15 12HLD+15 5 G 590 ± 40HLD 500 ± 40HLD ± 12 HLG 12HLG 6 E 725 ± 30HLD 508 ± 40HLD ± 12 HLE 12HLE 7 C 822 ± 30HLD 590 ± 40HLD ± 12 HLC 12HLC Configuration   No. Item Quantity Standard Configuration 1 Main uni 1 2 D type impact device 1 3 Standard test block 1 4 Cleaning brush (I) 1 5 Small support ring 1 6 Battery Charger 1 7 Paper for printing 1 8 Manual 1 9 Instrument package case 1 10 PC software with cable 1 Optional Configuration 11 Special impact devices   12 Support rings   13 Cleaning brush (II)   14 Other type of block

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