Calibrate The Electrode - Hach 8362 sc High Purity Water Panel Manuel D'utilisation

Prepare the electrode
The electrode must be soaked in the process water for a minimum of 10 hours before use. Make
sure to calibrate the electrode after preparation.
1. Remove the flow chamber. Refer to
2. Remove the protective cap from the electrode. Save the protective cap for use during long-term
storage. Refer to Storage
3. Rinse the electrode bulb with deionized water, pH buffer (for pH electrodes) or ORP standard
solution (for ORP electrodes).
4. Install the flow chamber.
Set the flow rate
Keep the flow rate between 100–300 mL/min at a maximum pressure of 4 bar (58 psi). Do not let the
flow chamber become empty.
1. Open the valve on the sample line to let sample flow through the panel.
2. Turn the knob on the flow meter to set the flow rate to between 100–300 mL/min.
3. Look for bubbles in the flow chamber. Adjust the flow to remove the bubbles.

Calibrate the electrode

Prerequisite: Soak the electrode in the process water for a minimum of 10 hours.
Use the 2-point calibration method with a pH 7 and a pH 4 buffer solution for best results.
1. Stop the sample flow.
2. Remove the flow chamber. Refer to
3. Rinse the flow chamber and electrode with deionized water.
4. Fill the flow chamber with pH 7 buffer.
5. Install the flow chamber with the pH 7 buffer.
6. Use the controller to calibrate the electrode. Refer to
7. When the calibration is complete, remove and rinse the flow chamber with deionized water. Install
the flow chamber.
8. Open the valve on the sample line and adjust the flow rate. Refer to
9. Let the sample flow through the panel for a minimum of 1 hour before comparison to another
instrument.
Figure 3 on page 8.
on page 11.
Figure 3.
pH calibration procedure
Set the flow rate
on page 8.
on page 7.
English 7