AWT420 | UNIVERSAL 4-WIRE, DUAL-INPUT TRANSMITTER | OI/AWT420-EN REV. B
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4-electrode conductivity
The conductivity/concentration/temperature calibration is a smart one-point calibration
routine that allows for single- or dual-point calibrations. By initiating calibrations at two
different conductivity/concentration/temperature values having ample separation, the
AWT420 transmitter automatically adjusts the offset, slope, or both to obtain the best sensor
performance.
Because this routine uses only the most recent calibration data, calibration can be conducted
throughout the sensor’s life thus ensuring consistent sensor performance. If an incorrect
calibration is entered, the Restore Cal Defaults option returns the transmitter calibration values
to factory settings.
The AWT420 transmitter can be configured as a conductivity or concentration device, the smart
one-point calibration routine automatically uses the same units as the measured process
variable.
Note. Access to the Calibrate menu is via Calibrate and Advanced levels only.
Menu Comment Default
Conductivity Cal See typical procedure, see . N/A
Concentration Cal See typical procedure, see . N/A
Resistivity Cal See typical procedure, see . N/A
Temperature Cal See Temperature Calibration procedure, see . N/A
Edit Cal
PV Slope Edit the PV Slope value.
PV Offset Edit the sensor PV Offset.
Valid offset values are:
•
•
•
Temperature Slope
Edit the Temperature Slope value.
Temperature Offset Edit the Temperature Offset value.
•
Restore Cal Defaults Resets slope and offset values to factory default. N/A
Calibrate
Exit
Menu
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