Hach-Lange NO3D sc Nitrate Sensor - Manual (Page 36)

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Troubleshooting
6.3.2 Troubleshooting during calibration
Symptom Possible cause Corrective actions
SENSOR CODE Sensor code entered incorrectly
Using the certificate, check whether the
sensor code was entered correctly. If not
having the certificate, carry out "Factory
Calibration" (Factory cal).
NITRATE
OFFSET
Error in the last nitrate calibration, sensor
cartridge too old, contaminated, faulty
Repeat the calibration.
Use the previous calibration.
Clean or replace the sensor cartridge.
SLOPE
Error in the last nitrate calibration, sensor
cartridge too old, contaminated, faulty
Repeat the calibration.
Use the previous calibration.
Clean or replace the sensor cartridge.
CHLORIDE
OFFSET
Error in the last chloride calibration, sensor
cartridge too old, contaminated, faulty
Repeat the calibration.
Use the previous calibration.
Clean or replace the sensor cartridge.
SLOPE
Error in the last chloride calibration, sensor
cartridge too old, contaminated, faulty
Repeat the calibration.
Use the previous calibration.
Clean or replace the sensor cartridge.