Hach-Lange SI792 D, SI792x D, SI792x D-FF, SI792x D-PA User Manual - Manual (Page 84)

Troubleshooting
82
10.4 Calibration errors
Table 25 describes the calibration error messages.
Table 25 Calibration error messages
Display Description Corrective action
Slope error icon Slope is out of range
Make sure that the specified
values in the configuration
menu are correct.
Make sure of the
temperature specification in
configuration.
Replace the sensor.
CAL ERR with
calibration timer
icon
Calibration canceled due to
large drift in mV reading.
Make sure that the
temperature does not
change during calibration.
Make sure that the cable is
sufficiently shielded from
strong electric fields.
Make sure that the sensor
has electrolyte.
Clean the sensor.
Replace the sensor.