Liquistation CSF48 Inputs: ISE
175
Delta slope (only pH)
The device determines the difference in slope between the last calibration and the penultimate
calibration, and issues a warning or an alarm depending on the setting configured. The
difference is an indicator for the condition of the sensor. The greater the change, the greater the
wear experienced by the pH-sensitive glass membrane as a result of chemical corrosion or
abrasion.
Delta zero point (only pH)
The device determines the difference between the last calibration and the penultimate
calibration, and issues a warning or an alarm depending on the setting configured. The
difference is an indicator for the condition of the sensor. The following applies to pH glass
electrodes: The greater the change, the greater the wear experienced by the reference as a result
of contaminating ions or KCl dissolving away.
Path: Menu/Setup/Inputs/ISE/Extended setup/Diagnostics settings
Function Options Info
Delta slope 0.50 to 10.00 % Specify your limit values for monitoring the slope
differential.
Function Options
•On
•Off
Factory setting
Off
Warning limit Factory setting
2.5 %
Diagnostics code and associated message text:
518 "Sensor calib."
Path: Menu/Setup/Inputs/ISE/Extended setup/Diagnostics settings
Function Options Info
Delta zero point 0.00 to 5.00 Specify your limit values for monitoring the zero point or
operating point differential.
Function Options
•On
•Off
Factory setting
Off
Warning limit Factory setting
1.00
Diagnostics code and associated message text:
520 "Sensor calib."
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