With the new sensor modules Type MS08 and Type MS09, our Online water analysis system Type 8905 can now also measure the SAK254 value (dissolved organic substances) and the nitrate content in the water. Both sensors are particularly suitable for your water analysis in drinking and process water treatment.
Sensors for SAK254 and nitrate measurement
Ever stricter regulations require compliance with limit values for certain water parameters in drinking water treatment. For example, the limit value for nitrate in drinking water across Europe is 50mg/l.
In addition, drinking water in areas with extensive agriculture and the associated use of fertilizers is increasingly contaminated with nitrate, which makes it increasingly difficult to comply with the currently applicable limit value. It is therefore all the more important to continuously monitor this water parameter, for example with our new sensor Type MS09.
Slowly biodegradable compounds are also found in natural water, but also in drinking water and treated wastewater, e.g. lignins, tannins or humic substances. By using SAK254 sensors, such as our new Type MS08, limit values for dissolved organic substances in the water can also be monitored, thus eliminating the last safety risks for consumers.
Optical absorption measurement
The new sensors Type MS08 and Type MS09 for SAK254- and nitrate monitoring use the principle of optical absorption measurement. The organic compounds dissolved in the water absorb specific wavelengths in the UV light spectrum. By measuring the absorption, algorithms can be used to determine the concentration of the substances in the water.
Type MS08: SAK254 measurement
The Type MS08 sensor uses optical absorption measurement at 254 nm and 530 nm to compensate for turbidity and is implemented using 2 LEDs and a detector. In addition to the SAK254 and turbidity 530 values, the TOCeq, BODeq and CODeq values can also be measured using application-specific correlation.
