AWT420 | UNIVERSAL 4-WIRE, DUAL-INPUT TRANSMITTER | OI/AWT420-EN REV. B
81
RDO
This section should be read in conjunction with Operating instruction .
Menu Comment Default
Sensor Calibration See Dissolved oxygen calibration.
There are two possible calibration modes:
Dissolved oxygen calibration
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.
3 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 and key to proceed to the next step.
5 Ensure the sensor is subjected to 100% saturation and
press the key to start the calibration process.
The calibration process screen is displayed:
On completion the result screen is displayed.
• If the calibration passes the new settings are displayed.
• If the calibration fails the reason for failure is displayed.
Note. The calibration can be canceled at any time during the
process by pressing the Abort key ( ).
Calibrate
Back
Select
S1 : RDO
S2 : RDO
Hold Outputs
Calibrate
Back
Select
Sensor Calibration
Sensor Calibration
Calibration Type
1-Point
Next
Edit
Calibrate
Start Span Cal?
Place in 100% Sat
Abort
Continue
Calibrate
PV 98.26 %
TMP 24.22 °C
Settling - Please Wait
Abort
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