27
CALIBRA
TION
8.1. QUICK CALIBRATION
The quick calibration provides a single point calibration for pH and conductivity sensors. The user can
select to calibrate one or both sensors.
HI9828-0
calibration solution is used for both pH and conductivity.
If a sensor is already calibrated or to skip a calibration, press
Skip
.
1. Remove the shield from the probe and rinse the probe with purified water.
2. Fill the calibration beaker 2/3 full with
HI9828-0
calibration solution.
3. Immerse the sensors in the calibration solution. Raise and lower the probe several times. Discard
the solution.
4. Fill the calibration beaker 2/3 full with
HI9828-0
calibration solution.
5. Slowly place the sensors into the solution and dislodge bubbles that may adhere to the sensors.
6. Wait a few minutes for the system to stabilize. From the “Calibration” menu select “Quick
calibration” and press
Select
. A two item calibration menu will appear (pH, conductivity) and
“pH” will start to blink along with the “Not ready” message.
7. The “Ready” message will appear when the pH reading has stabilized. Press
Confirm
to store
the calibration point. The “Storing” message will appear as the calibration proceeds to the next
sensor. A checkmark will appear in the box next to “pH” to indicate a successful calibration.
8. “Conductivity” will start to blink along with the “Not ready” message.
9. The “Ready” message will appear when the EC reading has stabilized. Press
Confirm
to store
the calibration point. The “Storing” message and a checkmark will appear in the box next to
“Conductivity” to indicate a successful calibration.
10. “Calibration completed” is displayed. Press
OK
to return to “Calibration” menu.
