ABB AWT420 Operating Instruction page 73

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
7 Ensure the sensor is inserted in the solution and press the
key to start the verification routine.
The calibration process screen is displayed:
Calibrate
PV 2000 NTU
mV 56.0 mV
Settling - Please Wait
Abort
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 (
).
73