Trans instruments WalkLAB HP 9010 Operation Manual page 6

Bvf
- CALIBATION BUFFER STANDARDS
This setting allows you to select ISO, NIST or customized
buffer standard. Factory preset is ISO standard.
ISO (I I I I SO SO)buffer standards are pH1.68, 7.00, 4.01, 10.01,
SO SO
12.45 and NIST (I 7 I 7 I 7 I 7 I I I I St
4.01, 6.86, 9.18 and 12.45, which are preset in this
meter, and will be automatically recognized during
calibration.
Select customize (CvSt
other than standard buffer solutions.
1. Press the
ENTER
blinking.
2. Press the SELECT
st or CvSt CvSt and press the
I 7 I 7 I 7 I 7 I I I I st
st st CvSt CvSt
3. Press the
SELECT
stAt
PrB PrB PrB PrB
- PROBE ELECTRODE STATUS
This setting allows you to review the last calibration
information about the electrode conditions.
A good pH electrode should have an Offset value no
greater than ±60mV and a Slope value of above 75%
and below 115%. Otherwise, the electrode should be
replaced.
There are 5 calibration points for review as follow:
Displayed Value Calibration Point within range
OFF OFF Offset in mV
OFF OFF
SL1 SL1
SL1 SL1 % of slope
SL2 SL2
SL2 SL2 % of slope
SL3 SL3
SL3 SL3 % of slope
SL4 SL4 SL4 SL4 % of slope
1. Press the
ENTER
value with Off Off blinking.
Off Off
2. Press the SELECT
display will show the % of slope with sl1
3. Press the
SELECT
the rest of slope value 2, 3, 4 and then back to
Offset in a cyclical mode.
When finish, press the
4 .
the key up for next setting.
SELECT
St) buffer standards are pH1.68,
St St
CvSt) if you have other standards
CvSt CvSt
key to set; display will show I I I I SO
key up or down to select from I I I I SO
ENTER
key up for next setting.
pH7.00
pH 7.00 to 4.01
pH 7.00 to 10.01
pH 4.01 to -2.00
pH 10.01 to 16.00
key to set; display will show the mV
key up to review Slope point 1,
key up sequentially to review all
key once followed by
EXIT
SO
SO SO
SO, SO SO
key to confirm.
sl1 below.
sl1 sl1
5
I sO
bvf
EXIT SETUP
ENTER
SELECT
stAt
Prb
EXIT
ENTER SETUP
SELECT
0. 5
mV
Off
EXIT SETUP
ENTER
SELECT
%
98. 5
sl2
EXIT SETUP
ENTER
SELECT