Temperature Calibration - ABB AWT420 Operating Instruction

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

Temperature calibration

1 At the Calibrate level, press the
The Calibrate menu is displayed:
Calibrate
S1 : pH/Redox (ORP)
S2 : pH/Redox (ORP)
pH Buffers
Hold Outputs
Back
2 Use the / keys to select the sensor to be calibrated,
and press the key to confirm selection.
The pH calibration menu is displayed:
Calibrate
Sensor Cal
Temperature Cal
Edit Cal
Sample Collection
Collection Complete
Restore Defaults
Back
3 Press the / keys to select Temperature Cal and press
the key to confirm selection.
The temperature calibration screen is displayed:
Temperature Cal
TMP 25.0 °C
Continue when Stable
Abort
key:
Select
Select
Continue
4 Wait for the displayed value to stabilize and press the
to proceed to the next step.
The buffer temperature is displayed:
Temperature Cal
TMP 25.0 °C
New 0025.0
Next
5 Use the / and keys to set the temperature and press
the key to confirm changes.
The temperature calibration process screen is displayed:
Temperature Cal
TMP 25.0 °C
Abort
On completion the result screen is displayed.
• If the calibration passes the slope and offset values 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 (
Continue
).
69
key