Troubleshooting; Error List - Hach LDO Manuel D'utilisation

Troubleshooting

Diagnostic and test menu
The diagnostic and test menu shows current and historical information about the LDO sensor.
To access the diagnostic and test menu, go to MENU>SENSOR SETUP>[Select
Sensor]>DIAG/TEST.
Refer to Table 5.
Option
SENSOR INFO
LOT CODE
SERIAL NUMBER
GAIN CORR
OFFSET CORR
PHASE DIAG
AMPL DIAG
DAYS TO CLEAN
SENSOR LIFE

Error list

If an error occurs, the reading on the measurement screen flashes. Output behavior is determined by
controller settings. Refer to the controller manual for details.
To show the current sensor errors, go to MENU>DIAGNOSTICS>[Select Sensor]>ERROR LIST.
Refer to Table 6.
Error
RED AMPL LOW (Value is below 0.01)
OR
BLUE AMPL LOW (Value is below 0.01)
Warning list
When the warning icon flashes (sc100 and sc200) or when the screen turns yellow (sc1000), a
message is shown on the bottom of the measurement screen. On the sc1000, the screen turns
16 English
Table 5 DIAG/TEST menu
Description
SOFTWARE VERS—Shows the installed software version
BOOT VERSION—Shows the installed boot version
DRIVER VERS—Shows the installed software driver version
Shows the sensor cap manufacturing lot
Sensor serial number
Adjust the calibration gain value.
Range: 0.50 to 2.00
Adjust the calibration offset value (mg/L or ppm).
Range: –3.00 to +3.00
Shows the phase for total, red and blue wavelengths. Updates once per second.
Shows the amplitude for red and blue wavelengths. Updates once per second.
Shows the number of days until the next scheduled manual cleaning.
Shows the number of days until the next scheduled sensor cap replacement
Table 6 Error list for the LDO sensor
Possible cause
The sensor cap is not installed,
or is not installed correctly.
The light path is blocked in the
sensor cap.
The sensor is not operating
correctly.
Resolution
Remove the sensor cap and install it
again.
Inspect the inside of the sensor cap
and lens.
Make sure that the LED is flashing.
Contact the manufacturer.