Troubleshooting During Calibration - Hach NO3D sc User Manual

Troubleshooting

6.3.2 Troubleshooting during calibration

Symptom
SENSOR CODE
NITRATE
OFFSET
SLOPE
CHLORIDE
OFFSET
SLOPE
36
Possible cause
Sensor code entered incorrectly
Error in the last nitrate calibration, sensor
cartridge too old, contaminated, faulty
Error in the last nitrate calibration, sensor
cartridge too old, contaminated, faulty
Error in the last chloride calibration, sensor
cartridge too old, contaminated, faulty
Error in the last chloride calibration, sensor
cartridge too old, contaminated, faulty
Corrective actions
Using the certificate, check whether the
sensor code was entered correctly. If not
having the certificate, carry out "Factory
Calibration" (Factory cal).
Repeat the calibration.
Use the previous calibration.
Clean or replace the sensor cartridge.
Repeat the calibration.
Use the previous calibration.
Clean or replace the sensor cartridge.
Repeat the calibration.
Use the previous calibration.
Clean or replace the sensor cartridge.
Repeat the calibration.
Use the previous calibration.
Clean or replace the sensor cartridge.