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Section 7
7.1 Error Codes
Displayed Error
ADC FAILURE
SENSOR PUNC
1
Replacement of the cartridge will reset the read out.
7.2 Warnings
Displayed Warning
Definition
No probe connected or measurement reading is out of
PROBE OUT RANGE
range.
No temperature element connected or temperature
TEMP OUT RANGE
reading is out of range.
FLASH FAILURE
Cannot write flash memory.
CAL REQUIRED
Past the calibration days since last calibration date.
REPLACE SENSOR
Past the total days of current sensor in use.
7.3 Sensor Troubleshooting
Problem
Sensor reading remains at 0 or
max. value for 24 hours or more
Cannot calibrate the sensor
Troubleshooting
When a sensor is experiencing an error condition, the sensor reading on
the measurement screen will flash and all relays and analog outputs associated with this
sensor will be held. The following conditions will cause the sensor reading to flash:
•
Sensor calibration
•
Relay timer washing cycle
•
Loss of communication
Highlight the Sensor Diag menu and press ENTER. Highlight Errors and press ENTER to
determine the cause of the error. Errors are defined in
Table 7 Error Codes
Definition
A/D conversion fails.
Sensor punctured.
A sensor warning will leave all menus, relays, and outputs functioning normally, but will
cause a warning icon to flash on the right side of the display. Highlight the Sensor Diag
menu and press
to determine the cause of the warning.
ENTER
A warning may be used to trigger a relay and users can set warning levels to define the
severity of the warning. Errors are defined in
Table 8 Warning Codes
Table 9 Sensor Troubleshooting
Cause
Membrane is punctured
Sensor module or sensor
membrane is bad.
Table
7.
Resolution
Call the Service Department.
Replace sensor cartridge.
Table
8.
Resolution
Check the DO range and ensure that it is
within 0–40 ppm.
Check the temperature range and ensure
that it is within –20 °C to 200 °C.
Call the Service Department.
Calibrate the sensor.
Install new sensor.
Resolution
Compare reading to measurement obtained by a
hand-held DO sensor. If different, Replace sensor
cartridge.
Call Customer Service.
Replace sensor cartridge. Recalibrate the sensor.
Call Customer Service.
客服：400 688 9809
1
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