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Instructions

ManualsBrandsVOLTCRAFT ManualsEnvironmental Testing EquipmentVOLTCRAFT KBM-110 pH tester ORP, Temperature, pH Calibrated to Manufacturer's standards (with certificate)
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KBM-110 Maintenance | 7
B-H86.0.12.DB214-1.0 21 / 32
Prerequisite
– A buffer solution with a value between pH 6.75 and pH 7.25 is available.
– A second buffer solution with a value below pH 6 and above pH 8 is available.
Instruction
1. Press the Function key for 2 seconds to open the Configuration menu.
2. (ONF appears in the display. Release the Function key.
3. The parameter SET.T appears if the temperature sensor is not plugged in. If the
temperature sensor is plugged in, you jump to the next point.
4. Enter the temperature of the buffer solution by pressing the Up key and Down key
and confirm the entry by pressing the Function key again.
5. The PK.OF parameter appears in the display.
6. Place the electrode in the buffer solution with a value between pH 6.75 and pH
7.25.
7. Wait until the display value is stable.
8. Adjust the value corresponding to the buffer solution with the Up key and Down key
and confirm the entry by pressing the Function key.
9. The PK.SL parameter appears in the display.
10. Place the electrode in the second buffer solution with a value below pH 6 or above
pH 8.
NOTE
A gradient compensation with buffer solutions between pH 6 and pH 8 is not possible.
With entry of the compensation value, the resulting gradient value is calculated imme-
diately and (AL ERR.2 or (AL ERR.3 appears in the display instead of the measurement of
the values are invalid.
11. Wait until the display value is stable.
12. Adjust the value corresponding to the buffer solution with the Up key and Down key
and confirm the entry by pressing the Function key.
13. Then, rinse the electrode again with distilled or deionised water.
Outcome of an action
After successful completion of the calibration the assessment of the electrode condi-
tion is displayed briefly in percent. Then, the current measurement is shown in the dis-
play again. A low value can be the result of the age of the electrode, contaminated or
old buffer solutions or impurities on the BNC connector.
If the calibration is not completed successfully an error message is displayed. (AL ERR.
appears in the display. See Error and system messages [}p.28]. Confirm the error
message pressing the Function key. The product restarts and the standard value for
the zero point and gradient are restored.