Liquistation CSF48 Inputs: Oxygen
139
Delta slope (only amperometric sensors)
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. An increasing change indicates the
formation of buildup on the sensor diaphragm or electrolyte contamination. Replace the
diaphragm and electrolyte as specified in the instructions in the sensor operating manual.
Zero point (only amperometric sensors)
The zero point corresponds to the sensor signal that is measured in a medium in the
absence of oxygen. You can calibrate the zero point in water that is free from oxygen or in
high-purity nitrogen. This improves accuracy in the trace range.
Upper warning limit Factory setting
140.0 %
Diagnostics code and associated message text:
511 "Sensor calib."
Lower warning limit Factory setting
60.0 %
Diagnostics code and associated message text:
509 "Sensor calib."
Path: Menu/Setup/Inputs/DO/Extended setup/Diagnostics settings
Function Options Info
Delta slope 0.0 to 50.0 % Specify the limit values for monitoring the slope
differential.
Function Options
•On
•Off
Factory setting
On
Warning limit Factory setting
5.0 %
Diagnostics code and associated message text:
518 "Sensor calib."
Path: Menu/Setup/Inputs/DO/Extended setup/Diagnostics settings
Function Options Info
Zero point 0.0 to 10.0 nA Specify the limit values for zero point monitoring in your
sensor.
Warning limit Factory setting
3.0 nA
Diagnostics code and associated message text:
513 "Zero Warn"
Path: Menu/Setup/Inputs/DO/Extended setup/Diagnostics settings
Function Options Info
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