Section 6 Troubleshooting; Error Codes; Warning Codes - Hach NO3D sc User Manual

Nitrate sensor
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Section 6

6.1 Error codes

Displayed errors
NO3 mV RANGE!
Nitrate mV value is out of measuring range
CL- mV RANGE!
Chloride mV value is out of measuring range
pHD RANGE!
pHD reference value out of measuring range
TEMP RANGE
Temperature value out of measuring range
NO CARTRIDGE
No sensor cartridge connected
SENSOR CODE
Sensor code calibration failed

6.2 Warning codes

Displayed warnings
NO3 mV RANGE!
CL- mV RANGE!
pHD RANGE!
TEMPERATURE
CARTRIDGE OLD
NITRATE
OFFSET
SLOPE
CHLORIDE
OFFSET
SLOPE
Troubleshooting
When the sensor is experiencing an error condition, the sensor
reading on the measurement screen will flash and the relays and
analog outputs associated with this sensor will be held or
transferred to a previously defined state depending on the
configuration settings used in the controller. Errors are defined in
Table
Table 2 Error codes
Definition
A sensor warning will leave all menus, relays and outputs functioning
normally, but will cause a warning icon to flash
Warnings may be used to trigger a relay and users can set warning
levels to define the severity. Warnings are defined in
Table 3 Warning codes
Definition
Nitrate mV value is close to measuring range limit
Chloride mV value is close to measuring range
limit
pHD reference value is close to limit
Temperature is close to limit
Sensor cartridge more than 1 year old
Nitrate offset is out of measuring range
Nitrate slope is out of measuring range
Chloride offset is out of measuring range
Chloride slope is out of measuring range
2.
See
6.3.1 Troubleshooting during operation on
page
34.
Connect sensor cartridge, see
page
13.
See
6.3.2 Troubleshooting during calibration on
page 36
See
6.3.1 Troubleshooting during operation
on page
Replace the sensor cartridge
See
6.3.2 Troubleshooting during calibration
on page
Resolution
section 3.3 on
.
Table
3.
Resolution
34.
36.
33

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