Calibration; Calibrate Menu - ABB Aztec ATS430 Operating Instructions Manual

6 Calibration

This section describes how to calibrate the sensor and involves
measuring the sensor's sensitivity to turbidity and / or
suspended solids by exposing the sensor to samples of known
turbidity or suspended solids content.
Calibrations are initiated via the Cal prompt displayed on the
main page or via the Operator pages or Calibrate and Advanced
menu items on the Access Level page – refer to transmitter
Operating instructions OI/AWT440-EN for all transmitter menu
options.
Menu
Calibrate
Select
Exit
Menu
S1(to 4) : TURB TSS
Sensor Verification
Turbidity Calibration
1-Point Cal
2-Point Cal
Suspended Solids Cal
1-Point Cal
2-Point Cal
Sample Collection
Collection Complete
Manual Coefficient
Restore Defaults
Hold Outputs
10 OI/ATS430–EN Rev. H | Aztec ATS430 | Turbidity sensor
Used to calibrate the sensor.
Access to the Calibrate menu is via the Calibrate and Advanced levels only.
Note. During calibration, current outputs and alarms are set to Hold automatically if
Hold Outputs is enabled (see below).
– Refer to Section 6.2, page 11 to perform a sensor verification.
– Refer to Section 6.3, page 13 to perform a turbidity calibration.
– Refer to Section 6.4, page 17 to perform a suspended solids calibration.
Comment
Select the turbidity sensor to calibrate.
General purpose span calibration.
Calibration for better accuracy.
General purpose span calibration.
Calibration for better accuracy.
Sample collection in progress.
Sample collection completed.
Enter the coefficient that relates the turbidity of the sample
to its suspended solids content.
Restores default values to their factory settings.
Enable / disable the Hold Outputs function. If enabled, the
current outputs and alarm functions are held during calibrations.
IMPORTANT (NOTE)
— Do not perform a calibration until the sensor and
transmitter are installed and ready for operation.
— Before removing the sensor for calibration
purposes, set the currents outputs and alarms to
Hold (enabled via the Operator Menu / Manual Hold
function).

6.1 Calibrate menu

Default
Enabled