60 AWT420 | UNIVERSAL 4-WIRE, DUAL-INPUT TRANSMITTER | OI/AWT420-EN REV. B
…15 Calibration procedures
pH/Redox/ORP calibration
Used to calibrate the sensor to measure pH using pH buffers.
The automatic calibration provides automatic temperature
compensation to the selected buffer.
1-Point calibration
1 At the Calibrate level, press the key:
The Calibrate menu is displayed:
2 Use the / keys to select the sensor to be
calibrated, and press the key to confirm selection.
The pH calibration menu is displayed:
3 Use the / keys to select sensor calibration and
press the key to confirm selection.
The calibration type is displayed:
4 Use the key to edit the calibration type.
Use the / keys to select the required calibration
type and press the key to confirm selection.
Press the key to proceed to the next step.
The buffer temperature is displayed:
5 Use the key to edit the buffer temperature.
Use the / keys to set the temperature and press
the key to confirm changes.
Press the key to proceed to the next step.
The buffer value is displayed:
Calibrate
Back
Select
S1 : pH/Redox (ORP)
S2 : pH/Redox (ORP)
pH Buffers
Hold Outputs
Calibrate
Back
Select
Sensor Cal
Temperature Cal
Edit Cal
Sample Collection
Collection Complete
Restore Cal Defaults
Sensor Cal
Next
Edit
Calibration Type
1-Pt Manual
1
2
3
Sensor Cal
Next
Edit
Buffer Temperature
25.0 °C
1
2
3
Sensor Cal
Next
Edit
Buffer Value
4.0 pH
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