M&A HM-6561 User Manual - page 4
1 Features and Specifications
1.1 Typical Applications
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Die cavity of molds
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Inspection of bearing and other mass produced parts on a
production line
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Failure analysis of pressure vessel, steam generator and
other equipment
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Inspection of installed machinery, permanent parts of
assembled systems and heavy work pieces.
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Testing surface of a small hollow space
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Material identification in the warehouse of metallic materials
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Rapid testing in large range and multi-measuring areas for
large-scale work piece
1.2 Testing Features
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Palm size for narrow space.
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Test at any angle, even upside down.
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Direct display of hardness scales HRB, HRC, HV, HB, HS,
HL.
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Large memory could store 250 groups including single
measured value, impact direction, material and hardness
scale etc.
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User recalibration function allowed.
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Can communicate with PC computer for statistics and
printing by the optional cable.
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Manual or automatic shut down.
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Low battery indication.
1.3 Technical Specifications
Display: 12.5mm LCD with back light
Accuracy: Display error ±0.8% atHLD=900
Measuring range: 200-900HLD
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%
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4.7 Data Memorizing
When taking measurements, all values will be stored automatically in
memory and the number of stored reading is accordingly increased by 1.
The tester can store up to 250 groups of data with measurement
conditions. If the memory is full, the tester will auto save the new reading
and discard the oldest one. That means the tester only hold the last 250
groups of data in memory.
4.8 Memory Recall
Under measuring mode marked by ‘M’ on the display , press key to
enter into mode of viewing stored values marked by ‘R’. Press key
or key to recall stored values forwards and backwards. To return
to the measurement state, just press the POWER/MENU key .
4.9 Delete data in memory
In the measurement state marked by ‘M’ on the display , the new reading
can be deleted by pressing key , and the number of stored reading
i s a c c o r d i n g l y d e c r e a s e d b y 1 . To c l e a r m e m o r y, j u s t p r e s s a n d
h o l d key for 3 seconds till the number of stored reading becomes
000.
4.10 Download to PC
This tester can communicate with a PC by optional USB or RS232C
cable and software. All the memorized data can download to your PC
every time when in a measurement state, you press key to enter
the viewing memorized state.
4.11 Auto Power Off
The instrument features an auto power off function designed to conserve
battery life. If the tool is idle (neither measuring nor any key operation)
for 3 minutes, it will turn itself off.
4.12 Battery Replacement
When the battery symbol appears on the display, it is time to replace the
batteries. Slide the Battery Cover away from the instrument and
remove the batteries. Install batteries paying careful attention to
polarity.
5. Calibration
After a long period of use, especially for measuring harder materials, the
ball tip of impact body will be worn which may lead the tester have more
or less error on accuracy. At this moment, this tester is designed to allow
recalibration. The calibration can be made in the following way.
5.1 pressing POWER/MENU keyfor 8 seconds into item CAL, and the
tester now is in the calibration mode.
5.2 Take measurements on the standard test block.
5.3 Use keyor keyto adjust the reading on the display to
the standard value.
5.4 Repeat 5.2 till the measurement readings are accurate.
5.5 Press POWER/MENU key to quit from the calibration mode and
return to the measurement mode.
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