7
Ele
(
P3
P3
P3
P3
.
0
0
0
0
) REVIEW OF ELECTRODE STATUS
This setting allows you to review the last calibration information about
the electrode conditions.
1. There are 5 calibration points for review in the follow order:
SAVED DATA
NIST Buffer range
ISO/ Custom Buffer range
P3.1
% of Calibration slope
0.00 to 4.01
0.00 to 4.50
P3.2
% of Calibration slope
4.02 to 6.86
4.51 to 7.00
P3.3
% of Calibration slope
6.87 to 9.18
7.01 to 9.50
P3.4
% of Calibration slope
9.18 to 14.00
9.51 to 14.00
P3.5
Calibration offset value in mili-volt (mV)
2. Press
and display will show value in percentage (%) for
P3
P3
P3
P3
.
1
1
1
1
. Repeat for the next value, in the above table order.
3. A good electrode should have a value of above 75% and below
115%. Otherwise, the electrode should be replaced.
4. At P3.5, display will show the calibrated offset value in mV. A good
electrode should have a value not greater than ±60mV. Otherwise,
the electrode should be replaced.
5. Press
to return to
ELE
ELE
ELE
ELE
(
P3
P3
P3
P3
.
0
0
0
0
)
6. Press
to go to next parameter.
Buf
(
P4
P4
P4
P4
.
0
0
0
0
) BUFFER CALIBRATION STANDARD
This setting allows you to select ISO, NIST or customized buffer
standard. Factory preset is ISO standard.
ISO
(
i
i
i
iSo
So
So
So
) buffer standards are pH1.68, 7.00, 4.01, 10.01, 12.45 and
NIST
(
n
n
n
ni
i
i
iSt
St
St
St
) buffer standards are pH1.68, 4.01, 6.86, 9.18 and 12.45,
which are preset in this meter, and will be automatically recognized
during calibration.
Select customize (
CUSt
CUSt
CUSt
CUSt
) if you have other standards other than Nist
buffer solutions. This will allow you to set each calibration point to the
standard buffer solution available, which are about to calibrate.
1. Press
and display will show
CUSt
CUSt
CUSt
CUSt
(
P4
P4
P4
P4
.
1
1
1
1
)
flashing.
2. Press
once to select
I
I
I
ISO
SO
SO
SO
,
n
n
n
ni
i
i
iSt
St
St
St
or
CUSt
CUSt
CUSt
CUSt
. Press
and
display will return to
BuF
BuF
BuF
BuF
(
P4
P4
P4
P4
.
0
0
0
0
)
.
3. Press
to go to next parameter.
