Hach LANGE EVITA OXY Manuel D'utilisation page 116

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