Hach LDO Benutzerhandbuch Seite 16

Option
SERIAL NUMBER
GAIN CORR
OFFSET CORR
PHASE DIAG
AMPL DIAG
DAYS TO CLEAN
SENSOR LIFE
7.2 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 7.
Error
RED AMPL LOW (Value is below 0.01)
OR
BLUE AMPL LOW (Value is below 0.01)
7.3 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
yellow to show a warning. To show the current sensor warnings, go to MENU>
DIAGNOSTICS>[Select Sensor]>WARNING LIST. Refer to
Warning Definition
EE SETUP ERR Storage is corrupt. The values have been set
to the factory default.
EE RSRVD ERR
TEMP < 0 C The process temperature is below 0 °C
(32 °F)
TEMP > 50 C The process temperature is above 50 °C
(120 °F)
RED AMPL LOW Value falls below 0.03
RED AMPL HIGH Value is greater than 0.35
16 English
Table 6 DIAG/TEST menu (continued)
Description
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 7 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.
Table 8 Sensor warning list
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.
Table 8.
Resolution
Contact technical support.
Increase the process temperature or stop
use until the process temperature is in the
sensor specification range.
Decrease the process temperature or stop
use until the process temperature is in the
sensor specification range.
Refer to Table 7 on page 16 .
Call technical support.