Hach-Lange EVITA OXY Basic User Manual - Manual (Page 116)

English 116
Guide to the troubleshooting – transmitter
OXY 4100/3150/4150
Symptom Output signal Event
code Cause Resolution
Incorrect measurement
value
Variable Incorrect calibration value
1 Check full-scale value in atmospheric air. Hold the
transmitter in the open air with the sensor down-
ward. Compare the value with DS/EN 25814 (refer
to appendix IIa)
2 Check the zero point (refer to appendix IIb)
3 If significant deviation, calibrate again
Display switches between
"Oxygen" and "End of
calibration"
End of the calibration phase
Switch to the "Send command" menu, and begin
measurement, refer to
Figure 33, page 110
Flashing bell in the
display field Depending on
settings
WO10
Measurement value above the set
transmitter output setting Change upper range under "Basic settings",
refer to
Figure 21, page 102
WO11
Measurement value under the set
transmitter output setting Change lower range under "Basic settings",
refer to
Figure 22, page 102
WO15
Service life expired. OXY 1100 should be
replaced as quickly as possible
Replace OXY 1100 sensor
WO20
Temperature of OXY 1000 below 0 °C.
Accuracy potentially reduced.
Inaccuracy
WO21
Temperature of OXY 1000 above 40 °C.
Accuracy potentially reduced.
Inaccuracy
EO50
Calibration not possible.
OXY 1100 worn out or defective
Replace OXY 1100 sensor
EO51
Output signal of OXY 1100 too weak.
OXY 1100 worn out or defective
Replace OXY 1100 sensor
EO55
The OXY 1100 membrane has become
damaged
Replace OXY 1100 sensor
EO60 EPROM error Replace transmitter
EO61
Transfer error between μ-controller and A/D
converter
or error in the A/D converter
Replace transmitter
EO62 Error in the input cycle Replace transmitter
EO63 Error in the temperature cycle Replace transmitter