NAVI D-25 Instruction Manual page 42

D-52/53/54/55
The example of calibration at second point has
explained the calibration process using the order from
pH 7 to pH 4. However, the calibration order of the
standard solutions can be arbitrarily chosen.
Electrode status
You can check the status of the electrode after
calibration.
Item
The electrode is in good condition.
,ERR
Electrode sensitivity is from 93% to 100%.
Not displayed
Electrode sensitivity has dropped to the
Blinking
level of 90% to 93%.
・ Make sure that you are using the right
standard solution.
・ Clean the electrode.
" ● Washing the electrodes" page 142
Electrode sensitivity has dropped to the
Displayed
level of 85% to 90%.
"● ERR No.05 Electrode sensitivity error
(pH)" page 160
ERR No.04 Asymmetrical potential error
" ● ERR No.04 Asymmetric potential
error" page 159
ERR No.05 Sensitivity error
"● ERR No.05 Electrode sensitivity error
(pH)" page 160
2 Taking Measurements
2.5 Measuring pH
Description
31