Change Calibration Options - Hach 3400 Serie Manual Del Usuario

8. If the calibration passed, push ENTER to continue.
9. If the option for operator ID is set to Yes in the Calibration Options
menu, enter an operator ID. Refer to
on page 14.
10. On the New Sensor screen, select whether the sensor is new:
Option Description
Yes The sensor was not calibrated previously with this controller. The
days of operation and previous calibration curves for the sensor are
reset.
No The sensor was calibrated previously with this controller.
11. Proceed to the calibration with a reference solution or process sample.
Calibration with a reference solution
Calibration adjusts the sensor reading to match the value of a reference
solution. Use a reference solution that is at the same value or higher than
the expected measurement readings.
Note: If the sensor is calibrated for the first time, be sure to complete the zero
calibration first.
1. Thoroughly rinse the clean sensor in deionized water.
2. Put the sensor in the reference solution. Support the sensor so that it
does not touch the container. Make sure that the sensing area is fully
immersed in the solution (Figure
12 English

Change calibration options

3). Stir the sensor to remove bubbles.
Figure 3 Sensor in reference solution
3. Wait for the sensor and solution temperature to equalize. This can take
30 minutes or more if the temperature difference between the process
and reference solution is significant.
4. Push the MENU key and select Sensor Setup, [Select Sensor],
Calibrate.
5. Select Sample Cal and push ENTER.
6. If the passcode is enabled in the security menu for the controller, enter
the passcode.
7. Select the option for the output signal during calibration:
Option Description
Active The instrument sends the current measured output value during the
calibration procedure.
Hold The sensor output value is held at the current measured value
during the calibration procedure.
Transfer A preset output value is sent during calibration. Refer to the
controller user manual to change the preset value.
8. With the sensor in the reference solution, push ENTER.
9. Wait for the value to stabilize and push ENTER.
Note: The screen may advance to the next step automatically.
10. Review the calibration result: