Temperature Calibration - Hach pH Manuel D'utilisation

10. If the calibration passed, push confirm.
11. Return the sensor to the process, then push confirm.
The output signal returns to the active state and the measured sample value is shown on the
measure screen.

4.3.4 Temperature calibration

The instrument is calibrated at the factory for accurate temperature measurement. Calibrate the
temperature 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. Push menu, then select SENSOR SETUP > [Select Sensor] > CALIBRATE.
4. Select TEMP ADJUST > EDIT TEMP, then push confirm.
5. Enter the exact temperature value, then push confirm.
6. Return the sensor to the process, then push confirm.
4.3.5 Exit calibration procedure
1. To exit a calibration, push back.
2. Select an option.
Option Description
ABORT Stop the calibration. A new calibration must start from the beginning.
BACK TO CAL Return to the calibration.
LEAVE Exit the calibration temporarily. Access to other menus is allowed. A calibration for a second
sensor (if present) can be started. To return to the calibration, push menu and select
SENSOR SETUP > [Select Sensor].
4.4 Sensor data and event logs
The sc controller provides a data log and an event log for each sensor. The data log stores the
measurement data at selected intervals (user configurable). The event log shows the events that
have occurred.
The data log and event log can be saved in CSV format. Refer to the controller documentation for
instructions.
4.5 Modbus registers
A list of Modbus registers is available for network communication. Refer to the manufacturer's
website for more information.
Section 5 Maintenance
Multiple hazards. Only qualified personnel must conduct the tasks described in this section of the
document.
Explosion hazard. Removal of a sensor from a pressurized vessel can be dangerous. Reduce the
process pressure to below 10 psi before removal. If this is not possible, use extreme caution. Refer to
the documentation supplied with the mounting hardware for more information.
D A N G E R
W A R N I N G
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