MITECH MH320 - 4 Preparation & Testing; 4.1 Preparation & Inspection before Testing; 4.1.1 Preparation of Sample Surface; 4.2 Testing Program

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Table 3-1
No.
Type of impact
device
Hardness value of Leeb
standard hardness block
Error of displayed
value
Repeatability
1
D
760±30HLD
530±40HLD
±6 HLD
±10 HLD
6 HLD
10 HLD
2
DC
760±30HLDC
530±40HLDC
±6 HLDC
±10 HLDC
6 HLD
10 HLD
3
DL
878±30HLDL
736±40HLDL
±12 HLDL
12 HLDL
4
D+15
766±30HLD+15
544±40HLD+15
±12 HLD+15
12 HLD+15
5
G
590±40HLG
500±40HLG
±12 HLG
12 HLG
6
E
725±30HLE
508±40HLE
±12 HLE
12 HLE
7
C
822±30HLC
590±40HLC
±12 HLC
12 HLC
 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
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