4
mvip@mitech-ndt.com
1.2 Technical specifications
The error and repeatability of the test value see the following table.
Table 1-1
No.
Impact
Device
Hardness value of the
test block
Measuring accuracy Measuring
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
：
170 to 960 HLD
Impact direction
：
360°. Auto detecting direction capability.
Built in conversion table from(to) HLD to(from) HLC
、
HLG
、
HLDL
、
HLD+15
Hardness Scale
：
HL
、
HB
、
HRB
、
HRC
、
HRA
、
HV
、
HS
Display
：
color TFT LCD
，
320×240 dots, adjustable backlight
Display of mean value, minimum value and maximum value.
Integrated data memory
：
500 measurement series.
Battery: two AA size, 1.5 Volt alkaline batteries
Continuous operating period
：
about 100 hours
（
with default brightness
）
Communication
：
USB1.1; PC software is provided to transfer data between the instrument and PC.
Multiple display languages (English, Chinese, etc.).
Weight: Approximately 220g.
Dimensions
：
150mm×76mm×38mm.
1.3 Standards and regulations applied
ASTM A956 (2006)
、
CNAL T0299 (2008)
、
JIS B7731 (2000)
、
DIN 50156 (2007)
、
DGZfP Guideline MC
1 (2008)
、
VDI / VDE Guideline 2616 Paper 1 (2002)
、
ISO 18625 (2003)
、
GB/T 17394 (1998)
、
JB/T 9378
(2001)
、
JJG 747 (1999).
1.4 Operating conditions
Operating temperature
：
-10
℃～＋
50
℃
;
Storage temperature
：
-30
℃～＋
60
℃
;
Humidity: ≤90
％
;
The surrounding environment should avoid of vibration, strong magnetic field, corrosive medium and
heavy dust.
1.5 Application examples
˗
Hardness tests on already assembled machines or steel and cast constructions; e.g. on heavy and
large work pieces or on permanently installed system parts.
˗
Rapid testing at many measuring points to examine the hardness over large areas.
˗
Control measurement for rapid determination of a specific thermal treatment result; e.g. annealed or
quenched and tempered conditions.
˗
Testing of workpieces for which the test indentation should be as small as possible on sharp edges;
