Tell us how a water quality analyzer works

Multi-parameter water quality online analyzer also known as multi-parameter water quality automatic monitoring integrated system is suitable for: water source monitoring, monitoring station, municipal water treatment process, municipal pipe network water quality supervision, rural tap water monitoring; Circulating cooling water, swimming pool water operation and management, industrial water source recycling, factory aquaculture and other fields
.

The water quality analyzer mainly uses the ion selective electrode measurement method to achieve detection
.

Electrodes on the instrument: PH, fluorine, sodium, potassium, calcium, magnesium, and reference electrodes
.

Each electrode has an ion-selective membrane that reacts with the corresponding ions in the sample to be measured, and the membrane is an ion exchanger that reacts with the ion charge and changes the potential of the membrane, which can detect the potential between the liquid, the sample and the membrane
.

The difference between the two potentials detected on both sides of the membrane produces a current, the sample, the reference electrode, the reference electrode liquid forming the "loop" side, the membrane, the internal electrode liquid, and the internal electrode on the other side
.

The difference in ion concentration between the internal electrode fluid and the sample creates an electrochemical voltage on both sides of the membrane of the working electrode, which is directed to the amplifier through the highly conductive internal electrode, and the reference electrode is also directed to the location
of the amplifier.

The calibration curve is obtained by detecting a standard solution with a known ion concentration, thereby detecting the ion concentration
in the sample.

When the measured ions in solution come into contact with the electrode, ion migration
occurs within the aquifer of the ion-selective electrode matrix.

There is a potential for the change in charge of the migrating ions, which changes the potential between the membrane surfaces, creating a potential difference
between the measuring electrode and the reference electrode.