Hach AN-ISE sc, Addendum To The Operator Manual

Page: 19 / 152

English 19
Troubleshooting
6.2 Warnings
I
n the event of a sensor warning, all menus, relays and outputs
continue to function as normal but a warning symbol lights up.
Warnings may be used to activate a relay; users can set warning
levels to define the severity. Warnings are defined in
Table 3 .
Table 3 Warnings
Displayed warnings Cause Resolution
RFID data Cartridge faulty, read process failed
Replace cartridge, check probe
with test cartridge
NH
4
mV is out of range!
1,2
Ammonium mV value is close to measuring range limit
Refer to 6.3.1 Troubleshooting
during operation, Page 21 .
K+ mV is out of range!
1,2
Potassium mV value is close to measuring range limit
NO
3
mV is out of range!
1,3
Nitrate mV value is close to measurement range limit
Cl- mV is out of range!
1,3
Chloride mV value is close to measurement range limit
Reference electrode 1
mV is out of range!
1st reference value is close to limit
Reference electrode 2
mV is out of range!
2nd reference value is close to limit
Temperature is out of
range!
Temperature is close to limit
The cartridge has
expired.
Sensor cartridge more than 1 year old Replace the sensor cartridge
NH
4
-N concentration is
high.
1,2
Ammonium concentration value exceeds measuring range
See 6.3.1 Troubleshooting during
operation, Page 21 .
NH
4
-N concentration is
low.
1,2
Ammonium concentration value is below measuring range
NO
3
-N concentration is
high.
1,3
Nitrate concentration value exceeds measuring range
NO
3
-N concentration is
low.
1,3
Nitrate concentration value is below measurement range
K+ concentration is high.
1,2
Potassium concentration value exceeds measuring range
K+ concentration is low.
1,2
Potassium concentration value is below measuring range
Cl- concentration is high.
1,3
Chloride concentration value exceeds measuring range
Cl- concentration is low.
1,3
Chloride concentration value is below measurement range