Hach pHD Manual Básico Del Usuario página 14

10. Review the calibration result:
• "The calibration was successfully completed."—The sensor is calibrated and ready to measure
samples. The slope and/or offset values are shown.
• "The calibration failed." —The calibration slope or offset is outside of accepted limits. Repeat
the calibration with fresh reference solutions. Clean the sensor if necessary.
11. Push OK.
12. Return the sensor to the process and push OK.
The output signal returns to the active state and the measured sample value is shown on the
measurement screen.
5.3.5 Temperature calibration
The instrument is calibrated at the factory for accurate temperature measurement. The temperature
can be calibrated to increase accuracy.
1. Put the sensor in a container of water.
2. Measure the temperature of the water with an accurate thermometer or independent instrument.
3. Select the main menu icon, then select Devices. A list of all of the available devices shows.
4. Select the sensor and select Device menu > Calibration.
5. For sensors connected to a pH/ORP module, do the steps that follow:
a. Select 1-point temperature calibration.
b. Wait for the value to stabilize, then push OK.
c. Enter the exact value and push OK.
6. For sensors connected to an sc digital gateway, do the steps that follow:
a. Select Temperature adjustment.
b. Wait for the value to stabilize, then push OK.
c. Select Edit Temperature.
d. Enter the exact value and push OK.
7. Return the sensor to the process and push the home icon.
5.3.6 Exit calibration procedure
1. To exit a calibration, push the back icon.
2. Select an option, then push OK.
Option
Quit calibration
(or Cancel)
Return to calibration Return to the calibration.
Leave calibration
(or Exit)
5.3.7 Reset the calibration
The calibration can be reset to the factory default settings. All sensor information is lost.
1. Select the main menu icon, then select Devices. A list of all of the available devices shows.
2. Select the sensor and select Device menu > Calibration.
3. Select Reset to default calibration values (or Reset setup), then push OK.
4. Push OK again.
14 English
Description
Stop the calibration. A new calibration must start from the beginning.
Exit the calibration temporarily. Access to other menus is allowed. A calibration for a
second sensor (if present) can be started.