User Manual Q&AAnswer
Feb 07, 2025 - 05:02 AM
To calibrate the pH sensor on the HANNA instruments HI 9914 controller, follow these steps:
1. Prepare the calibration solutions: You will need pH 4.01, pH 7.01, and pH 10.01 calibration solutions. Ensure that the solutions are fresh and within their expiration date.
2. Connect the pH sensor: Connect the pH sensor to the appropriate channel on the controller. Ensure that the sensor is securely connected.
3. Enter calibration mode: Press and hold the CAL button until the CAL LED starts flashing. This indicates that the controller is in calibration mode.
4. Select calibration solution: Use the UP and DOWN arrows to select the desired calibration solution. The selected solution will be displayed on the LCD.
5. Immerse the sensor: Immerse the pH sensor into the calibration solution. Ensure that the sensor is fully submerged and that the solution covers the sensing bulb.
6. Confirm calibration: Press the CAL button to confirm the calibration. The controller will display "CAL OK" if the calibration is successful.
7. Rinse the sensor: Rinse the pH sensor with distilled or deionized water to remove any residual calibration solution.
8. Repeat calibration: Repeat the calibration process for the other calibration solutions (pH 7.01 and pH 10.01) if necessary.
To calibrate the conductivity sensor on the HANNA instruments HI 9914 controller, follow these steps:
1. Prepare the calibration solution: You will need a calibration solution with a known conductivity value. Ensure that the solution is fresh and within its expiration date.
2. Connect the conductivity sensor: Connect the conductivity sensor to the appropriate channel on the controller. Ensure that the sensor is securely connected.
3. Enter calibration mode: Press and hold the CAL button until the CAL LED starts flashing. This indicates that the controller is in calibration mode.
4. Select calibration solution: Use the UP and DOWN arrows to select the desired calibration solution. The selected solution will be displayed on the LCD.
5. Immerse the sensor: Immerse the conductivity sensor into the calibration solution. Ensure that the sensor is fully submerged.
6. Set calibration value: Use the UP and DOWN arrows to set the calibration value to match the known conductivity value of the calibration solution.
7. Confirm calibration: Press the CAL button to confirm the calibration. The controller will display "CAL OK" if the calibration is successful.
8. Rinse the sensor: Rinse the conductivity sensor with distilled or deionized water to remove any residual calibration solution.
It is important to note that the specific calibration procedures may vary slightly depending on the model and firmware version of the HANNA instruments HI 9914 controller. For detailed instructions and any additional information, please refer to the user manual provided by HANNA instruments.
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