M&A HM-6561 User Manual - page 6
1 Calibration mode
2 Measuring value
3 Average times set
th
4 n measuring value
5 Impact type
6 Measuring state
7 Browsing state
8 Average Symbol
9 Measuring symbol
10 Battery indicator
11 Hardness scale
12 Material
13 Direction
14 Number of memorized data
Release buttom
Load tube
Guide tube
Main unit
Impact ball head
Coil
Support ring
Test workpiece
POWER
MENU
RD
DIR
SHI FT
DEL
MATE
SCALE
Load tube
Release button
Battery compartment/cover
Display
Jack for RS232C interface
Power/Menu key
Read/Plus key
Direction/Shift key
Delete/Minus key
Support ring
3
Fig 2.3
Fig 2.2
4.3 Selecting a material
Press the DIR/SHIFT key first and not release it. Then press
key to scroll down the list until the desired material is reached.
4.4 Choosing a hardness scale
Press the DIR/SHIFT key first and not release it. Then press key
to scroll down the list until the desired hardness scale is reached.
Press DIR/SHIFT key + DEL/ key
4.5 Average Times Settin g
A f t e r p r e s s i n g P O W E R / M E N U k e y f o r 6 s e c o n d s i n t o i t e m AV E ,
p r e s s key or key in turn to select the average times from
2-9, selecting 0 means no mean values. Press POWER/MENU key
finally to exit from the operation
This function allows you to view the average of the amount of tests you
entered.
Example: If you chose “3”. The tester will show the average after 3
consecutive tests.
4.6 Measuring Procedure
Use standard test block to check your hardness tester prior to a
hardness test.
4.6.1 Loading
Push the Loading Tube towards the support ring to lock the impact body.
Then, while still holding on to the loading tube, slowly return it to its
original position.
Caution: Returning the Loading Tube back to its original position too
quickly may damage the tester’s parts. ALWAYS hold onto the Loading
Tube and slowly guide it back in a controlled fashion.
HL
HRC
HRB
HV
HB
HS
RD/
DEL/
RD/
DEL/
POWER
MENU
RD
DIR
SHIF T
DE L
MATE
SCALE
8
Fig 4.3