ABB AWT420 Operating Instruction page 61

AW T4 2 0 | U N I V E R S A L 4 - W I R E , D U A L- I N P U T T R A N S M I T T E R | O I/A W T4 2 0 - E N R E V. B
6 Use the key to edit the buffer value.
Use the / keys to set the value and press
the key to confirm changes.
Press the key to proceed to the next step.
Calibrate
Immerse in Buffer 1
4.0 pH
Abort
7 Place the sensor into buffer 1 and press the
key to perform the calibration. The calibration
process screen is displayed.
Calibrate
pH 4.00 pH
Tmp 25.0 °C
Settling-Please Wait
Abort
On completion the result screen is displayed.
• If the calibration passes, the slope and offset values
are displayed.
• If the calibration fails, the failure reason is displayed.
Note. The calibration can be canceled at any time during
the process by pressing the Abort
Continue
key.
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