Integrated Multi-parameter Sensor Operation manual
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purchased and installed.
2.11 Nitrate ion sensor
It is a kind of mesh membrane electrode. A special organic ion exchange membrane is the main material
of the membrane, which dissolves in organic solution and permeates with PVC mesh. Its accuracy is
worse than colorimetric method, but it responds instantly. The appearance of Nitrate ion sensor is showed
by Figure 13 as below.
Figure 13 Nitrate ion sensor
Nitrate ion sensor Specification
principle
ion-selective electrode method
Range
0.5~100mg/L
resolution
0.01~1 mg/L depending on the range
Accuracy
±
10 % or
±
2 mg/L ,
(the electrode is greatly affected
by temperature, field comparison is the best field
calibration, otherwise it may be out of range)
2.12 Fluoride Ion Sensor
F-ion selective electrode is a kind of solid-state membrane electrode. LaF3 single crystal is the main
material of the membrane, and the periphery of the membrane is a special polymer. The appearance of
fluoride ion sensor is showed by Figure 14 as below.