Mitutoyo ARK-600 User manual
GB203-1ME
INSTRUCTION
MANUAL
FOR
ROCKWELL
HARDNESS
TESTING
MODEL:
ARK-600
Mitutoyo
WARNNIG
Do
not
apply
shock
to
the
loading
shaft
or
the
tip
of
the
indenter
with
the
anvil
or
a
sample.
Otherwise,
the.
gauge
may
be
damaged,
or
inside
of
the
loadingshaft,
indenter
tip,
or
anvil
surface
may
be
flawed,
leading
to
incorrect
hardness
values.
Observe
the
following
for
proper
operation;
1.
T
o
mount
and
dismount
the
anvil,
lower
the
elevating
spindle
sufficiently.
2.
T
o
place
or
take
off
a
large
or
heavy
specimen
onto/from
the
anvil,
make
sufficient
clearance
between
the
specimen
and
the
indenter
to
prevent
them
from
contacting.
3.
W
hen
clamping
the
elevating
spindle
cover,
leave
a
clearance
(H)
of
4mm
or
more
so
that
the
elevating
spindle
cover
will
not
come
in
touch
with
the
TABLE
OF
CONTENTS
page
1
.
2
.
3
.
4
.
4
TABLE
OF
CONTENTS
.
NAMES
AND
FUNCTIONS
OF
COMPONENTS
NAMES
OF
FRONT
PANEL
.
REAR
PANEL
.
FUNCTIONS
...
ACCESSORIES
AND
BASIC
DIMENSIONS
PREPARATION
FOR
OPERATION
.
HARDNESS
MEASUREMENT
.
.
1
AUTO
Automatic
Removal
of
Test
Force
1
2
3
3
4
6
7
10
10
4.2
5
.
5.1
5.2
5.3
5.4
5.5
Duration
—
RESET
&
ERRORS
Optional
Load
Duration
Test
force
not
reset
(after
power
on)
.
“Unload
switch"
error
(after
power
on)
.
“Preliminary
test
force"
error
(during
normal
operation)
“Test
force"
error
(during
normal
operation)
"Load
switch"
error
(during
normal
operation)
6.
INSPECTION
.
7
.
ROCKWELL
HARDNESS
SCALES
.
8.
TESTER
CALIBRATION
.
8.1
Preliminary
Test
Force
Measurement
8.2
Test
Force
Calibration
.
8.3
Indicator
Calibration
.
9.
SPECIFICATIONS
.
10.
PARTS
LIST
AND
OPTIONAL
ACCESSORIES
■
11.
INTERFACES
.
11.1
RS-232C
interface
.
11.2
DIGIMATIC
interface
.
13
16
16
16
16
16
17
18
18
19
19
19
19
20
22
24
24
25
1
1.
NAMES
AND
FUNCTIONS
OF
COMPONENTS
Front
panel
(See
p.3)
Test
force
sequence
switch:
AUTO:
Performs
one
cycle
of
hardness
measurement
DURATION:
Used
for
appling
and
removing
test
force
2
RS-232C
I/F
output
connector
Power
supply
FUNCTIONS
1)
Scroll
selector
Upper
/
lower
limits
for
judgement
(HIGH,
LOW),
indenter
selection
(IND),
offset
of
hardness
value
(OFFSET)
in
the
setting
of
parameters
can
be
easily
set
by
means
of
three
switches,
SELECT,
UP
and
DOWN.
The
setting
of
parameters
can
be
scrolled
one
by
one
in
the
order
as
shown
in
the
left
figure
by
pressing
the
SELECT
switch.
Any
of
HIGH,
LOW,
OFFSET
and
IND
lamps
will
be
not
lighted
up.
Upper
limit
setting
mode
U
II
1.
HIGH
will
light
up.
2.
Operate
UP
/
DOWN
switches
to
change
the
upper
limit
value:
t
(UP)
switch:
increases
the
value
one
by
one;
DOWN)
switch:
decreases
the
value
one
by
one.
4
Lower
limit
setting
mode
1
.
2
.
it
n
LOW
will
light
up.
Operate
UP
/
DOWN
switches
to
change
the
lower
limit
value.
Hardness
value
offset
mode
1
.
2
.
II
It
OFFSET
will
light
up.
Operate
UP
/
DOWN
switches
to
change
the
offset
value.
Indenter
selection
mode
1
.
2
.
II
It
IND
will
light
up.
Operate
the
UP
/
DOWN
switches
to
select
the
indenter.
2)
OK
/
NG
for
judgment
Set
the
upper
and
lower
limit
values.
OK
/
NG
lamp
will
light
up
to
show
judgment
after
the
hardness
is
measured.
3)
Loading
navigator
When
the
preliminary
test
force
is
applied
by
the
elevating
handle,
4
LEDs
of
the
loading
navigator
will
show
by
flashing.
When
hardness
indicator
displays
the
appropriate
value
(
360
approx.),
4
LEDs
will
light
up.
Note:
The
appropriate
value
(
360
to
370
)
is
not
the
preliminary
test
force.
UIIU0Q9
3.
P
R
EPARATION
FOR
OPERATION
1.
Open
the
top
of
the
case.
2.
Remove
the
securing
board
{
Fig.l
)
{
Fig.l
)
securing
boad
3.
Remove
the
case.
4.
Take
down
the
accessory
box
from
the
lower
board.
5.
Take
down
the
tester
from
the
lower
board.
6.
Place
the
tester
on
a
level
base
plate.
Install
it
on
a
vibration-free
or
vibration-insulated
place.
Head
cover
7.
Open
the
accessory
box.
8.
Lift
the
head
cover
vertically
upward
(
Fig.2
).
'
9.
Remove
the
two
fixing
screws
from
the
head
(
Fig.2
)
cover
(
Fig.2
).
10.
F
i
t
the
front
cover
with
one
removed
screw
temporarily.
(
Fig.3
).
Front
cover
Screw
11.
U
n
s
c
r
ew
the
clamping
screw
of
the
index
lever
and
remove
the
cushion
(
Fig.4
).
The
removed
clamping
screw
should
be
reserved
in
the
accessories
box.
„
.
.
Cusnion
-
Clamping
screw
of
the
index
lever-
(
Fig.3
)
!
(
Fig.4
)
12
.
13
.
Remount
the
front
cover
to
the
main
body.
Confirm
that
the
cable
is
connected
to
the
tester.
Rear
Remove
the
four
fixing
screws
from
the
rear
cover
{
Fig.5
).
7
{
Fig.5
)
15.
R
emove
the
string
which
secures
the
loading
lever
(
Fig.7
)
.
16.
R
e
move
non-tarnish
paper
(
Fig.8
)
Non-tarnish
paper
(
Fig.7
)
{
Fig.8
)
17.
Lower
the
elevating
handle
to
remove
the
protection
tube
and
non-tarnish
paper
(
Fig.9
).
18.
Attach
the
illuminating
lamp
(
Fig.9
).
Illuminating
lamp
Protection
tube
Non-tarnish
paper
19.
A
ttach
the
anvil
(
or
the
table
)
(
Fig.10
)
Beware
not
to
allow
any
dust
to
enter
between
the
elevating
screw
and
the
anvil
(
or
the
table
).
(
Fig.9
)
8
(
Fig.10
)
20.
P
l
a
c
e
the
level
on
the
anvil
and
adjust
the
horizontality
of
the
tester
with
the
leveling
bolts
(
two
on
the
front
and
one
on
the
rear
),
using
the
hexagon
key.
For
fixing
the
tester
to
a
warkbench,
use
the
two
bolts
on
the
front
and
the
two
securing
screws
(
through
the
two
supplymentary
tapped
holes
)
(
Fig.11
).
(
These
tapped
holes
are
provided
also
for
fixing
the
tester
with
the
optional
fixture
for
transportation.
)
21.
Hang
the
hooking
rings
of
the
weights
set
to
the
hanging
rods
of
the
loading
lever
(
Fig.12
).
22.
Rest
the
weight
pins
on
the
weight
lifting
arms
of
the
sliding
plate
(
Fig.12
).
Then
set
the
test
force
to
60kgf
by
means
of
the
test
force
selector
knob
to
test
that
the
weight
pins
rest
on
the
weight
lifting
arms.
Leveling
volts
Hanging
rod
Weight
lifting
arm
tapped
holes
{
Fig.11)
23.
Replace
the
rear
cover.
^
Fig.12
)
24.
Remount
the
head
cover.
25.
Connect
the
power
cable
to
the
power
supply
connector
on
the
rear
panel.
26.
Insert
the
indenter
into
the
hole
of
the
indenter
shaft
taking
care
not
to
touch
the
tip
of
the
indenter
by
hand
/
T,
•
-ION
Indenter
(
Fag.13
)
(
Fig.13
)
9
4.
HARDNESS
MEASUREMENT
(
Set
the
measurement
/
Calibration
Switch
to
the
“MEAS."
position.)
4
.
1
AUTO
Automat
Set
the
test
force
ic
Removal
sequence
of
Test
Force
switch
to
the
"AUTO
1)
Turn
"ON"
the
POWER
switch.
4
LEDs
of
the
loading
navigator
will
rapidly
flash.
Hardness
indicator
will
display
*‘100
(130)
2)
Place
a
specimen
on
the
anvil
(
or
table
).
3)
Turn
the
elevating
handle
clockwise
carefully
to
raise
the
specimen
to
a
apply
the
preliminary
test
force.
The
indicated
value
will
count
up.
4
LEDs
will
slow
by
flashing.
-
1
0
-
"
position.
nODD
ifL-
100.0
NG
nnoD
4)
Stop
the
handle
operation
as
soon
as
4
LEDs
light
up.
onnn
OK
360.0
NG
-
370.0
If
the
preliminary
test
force
is
overloaded,
the
overloading
lamp
will
light
up
and
the
hardness
indicator
will
display
“
RRRR
".
In
this
case,
lower
the
specimen,
change
its
position,
and
retry.
5)
Press
the
START
switch
to
start
the
test
force
sequence.
The
sequence
of
loading,
duration,
and
unloading
will
be
automatically
performe'd.
Hardness
indicator
will
preset.
The
loading
lamp
will
light'
up.
OK
100.0
NG
av
a
V
U-O
DV
4
LEDs
will
flash.
6)
After
the
loading
lamp
and
4
LEDs
go
out,
read
the
indicated
value.
■
With
“OK/NG
judgment"
setting:
A
judgment
result
is
displayed
by
lighting
OK
or
NG
lamp.
•
With
"OUTPUT
ON"
setting;
Data
is
transmitted
out
according
to
the
data
transmission
format.
7)
Turn
the
elevating
handle
counterclockwise
to
complete
the
mesurement.
4
LEDs
will
rapidly
flash.
ODDD
i
I
Donn
1
2
'
-
4
.
2
DURATION
-
Optional
Load
Duration
Set
the
test
force
sequence
switch
to
the
‘‘DURATION
position.
1)
T
urn
"ON"
the
POWER
switch.
4
LEDs
of
the
loading
navigator
will
rapidly
flash.
Hardness
indicator
will
display
“100
(130)
".
DDOn
OK
100.0
NG
2)
P
l
a
c
e
a
specimen
on
the
anvil
(
or
table
).
3)
T
u
r
n
the
elevating
handle
clockwise
carefully
to
raise
the
specimen
to
apply
the
preliminary
test
force.
The
indicated
value
will
count
up.
4
LEDs
will
slow
by
flashing.
4)
Stop
the
handle
operation
as
soon
as
4
LEDs
light
up.
DDDO
OK
360.0
NG
'370.0
If
the
preliminary
test
force
is
overloaded,
the
overloading
lamp
will
light
up
and
the
hardness
indicator
will
display
*‘
RRRR
In
this
case,
lower
the
specimen,
change
its
position,
and
retry.
-13-
5)
P
r
ess
the
START
switch
to
apply
the
test
force.
The
loading
lamp
will
light
up.
4
LEDs
will
flash.
6)
S
t
a
r
t
watching
the
time
when
the
inner
2
LEDs
light
up.
Load
duration
will
be
up
to
press
the
START
switch
again.
O'O
ov
I->
nnnn
7)
R
epress
the
START
switch
to
release
the
test
force.
4
LEDs
will
flash.
av
ov
8)
A
fter
the
loading
lamp
and
4
LEDs
go
out,
read
the
indicated
value.
•
With
“OK/NG
judgment"
setting:
A
judgmnt
result
is
displayed
by
lighting
OK
or
NG
lamp.
•
With
"OUTPUT
ON"
setting:
Data
is
transmitted
out
according
to
the
data
transmission
format.
onnn
9)
Turn
the
elevating
handle
counterclockwise
to
complete
the
mesurement.
4
LEDs
will
rapidly
flash.
ODDD
5.
RESET
&
ERRORS
5.1
Test
force
not
reset
(after
power
on)
Operation
Value
Loading
navigator
Comments
Power
ON
1
D
D
-
D
i
1
D
D
.
D
Flashing
(from
inner
to
outer)
0-0
p€
'_1
Test
force
is
released.
Rapidly
flashing
(from
right
to
left)
Reset
end
5.2
"Unload
switch"
error
(after
power
on)
Operation
Value
Loading
navigator
Comments
Power
ON
(
1
1
After
approx.
13sec.
1
D
D
.
D
1
1
Flashing
av
nv
II
II
L..—.
J
k
....
J
Test
force
is
released.
4
LEDs
light
up.
Z7Z7
an
Repair
is
necessary
notify
your
dealer.
_
5.3
"Preliminary
test
force"
error
(during
normal
operation)
Operation
Value
Loading
navigator
Comments
After
preliminary
test
force
is
applied
(ascending
operation
by
handle).
>
3
1
D
.
D
4
LEDs
light
up.
an
DO
If
this
is
the
case,
lower
the
elevating
screw,
change
the
specimen
position,
and
retry.
5.4
"Test
force"
error
(during
normal
operation)
Operation
Value
Loading
navigator
Comments
During
test
force
application
DDDD
i
4
LEDs
light
up.
on
DO
Test
force
is
badly
applied.
Specimen
is
too
soft,
or
scale
is
badly
selected.
5.5
"Load
switch"
error
(during
normal
operation)
Operation
Value
Loading
navigator
Comments
During
test
force
application
After
approx.
7
sec.
Rapid
countdown
1
i
Flashing
from
outer
to
inner
UV
OV
'_1
1_1
4
LEDs
light
up.
Repair
is
necessary.
Notify
your
dealer.
-17-
6.
INSPECTION
1)
No
dust
should
remain
on
the
contact
surfaces.
Clean
the
contact
surfaces
between
the
specimen
base
(anvil
or
table)
and
elevating
screw,
between
specimen
base
and
specimen,
and
between
indenter
and
indenter
shaft.
2)
Measuring
deformation
of
tester
frame.
Carry
out
the
same
operation
as
hardness
measurement
under
the
condition
illustrated
on
the
right.
3)
Lubrication
A
“ball
oil
filler"
is
provided
on
the
upper
surface
of
the
elevating
screw
handle.
Lubricate
with
machine
oil
as
necessity
requires.
.
Other
parts
do
not
reguire
lubrication.
7.
ROCKWELL
HARDNESS
SCALES
Scales
listed
in
the
table
below
are
provided.
Select
a
scale
as
accustomed.
Preliminary
test
force
(kgf)
98.07N
(10)
Use
Test
force
(kgf)
588.4N
980.7N
1471N
(60)
(100)
(150)
Indenter
Diamond
indenter
ADC
Steel
Steel
ball
indenter
(dia.
mm)
1.854
F
B
G
Soft
steel.
Light
alloys
3.175
H
E
K
Soft
metals
Plastics
6.35
L
M
P
12.7
R
S
V
Hardness
Equation
(D
100
-0.5h
(D
130
-0.5h
(D
®
"h"
denotes
diference
of
indenter
displacement
in
twice
application
of
the
preliminary
test
force,
(units
in
microns)
(D
When
using
diamond
indenter.
(D
When
using
ball
indenter.
Table of contents
