DEPOLOX
®
Pool Operation
WT.050.570.000.DE.IM.0714 67
1.3
pH calibration
NOTE
During pH calibration the buffer solution and the sample water
should have the same temperature. If there is a difference in tem-
perature of > 5 °C first enter the temperature of the buffer solution
in the "Calibration" menu under "Calibration pH" (Display 2.1.2) for
the parameter "Cal. at temp".
pH-7 alignment 1. Starting from the basic display in the main menu select the "Calib-
ration" area of operation.
2. Select the "pH" menu item.
The window "Calibr. pH" (Display 2.1.2) appears on the graphic
display.
3. Select the "Cal. pH7" parameter.
4. Place one of the supplied beakers into the bottom clip and fill with
the buffer solution "pH 7.00" or a bag with buffer solution "pH 7.00"
into the bottom clip.
5. Pull or unscrew the pH sensor from the lid of the cell body.
6. Dip the pH sensor through the top clip at least 2 cm deep into the
buffer solution and move slightly until the indicated pH value re-
mains constant.
7. Use the four arrow keys to enter the value to be calibrated.
8. Confirm the entry.
Slope alignment 9. Remove the buffer solution "pH 7.00" from the bottom clip.
10. Wash the sensor in distilled water to prevent carry-over of the buf-
fer solution.
11. Select the parameter "Cal. pH" and confirm the selection.
12. Place one of the supplied beakers into the bottom clip and fill with
the buffer solution "pH 4.65" or clamp a bag with buffer solution "pH
4.65" into the bottom clip.
NOTE
?
If buffer solutions other than those stated are used, the pH value of
the buffer solution must be lower than pH 6 or higher than pH 8.
13. Dip the pH sensor at least 2 cm deep into the buffer solution and
move slightly until the indicated pH value remains constant.
14. Use the four arrow keys to enter the value to be calibrated.
15. Confirm the entry.
16. Remove the pH sensor from the top clip.
17. Insert or screw the pH sensor into the lid of the cell body.
The pH measurement is then calibrated.
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