ABB AWT420 - TSS calibration

76 AWT420 | UNIVERSAL 4-WIRE, DUAL-INPUT TRANSMITTER | OI/AWT420-EN REV. B
…15 Calibration procedures
TSS 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.
The TSS Cal menu is displayed:
3 Press the / keys to select TSS Cal 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 and key to proceed to the next step.
The High Solution Value is displayed:
5 Use the key to edit the High Solution Value.
Use the / keys to set the value and press the key
to confirm changes.
Press the and key to proceed to the next step.
6 Ensure the sensor is inserted in the solution and press the
key to start the verification routine.
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 : Turb TSS
S2 : Turb TSS
Hold Outputs
Calibrate
Back
Select
Sensor Verication
Turbidity Cal
TSS Cal
TSS Manual Cal
Sample Collection
Collection Complete
TSS Cal
Calibration Type
1-Point
Next
Edit
TSS Cal
High Solution Value
1.000 mg/l
Next
Edit
Turbidity Cal
High Solution Value
20000 NTU
Next
Edit
Calibrate
Start Cal?
1.000 mg/l
Abort
Continue
Calibrate
PV 1.0000 mg/l
mV 0.000 NTU
Settling - Please Wait
Abort