MS08 O₃
Dissolved ozone measurement
Ozone treatment is more and more used for the protection of lakes, rivers, drinking water networks, recreational water or even in pharmaceutical and food industries. O3 is a powerful oxidant capable of destroying organic matter and most of pathogens. However, O3 excess revealed to be toxic et lead to corrosion risks. As a result, it is important to control dissolved O3 level in treated water.
Dissolved O3 measurement can be done with 2 probes type:
- The MS08 device, for a potable or laboratory measurement. This kit contains a data reading box and 2 linked probes. The titanium probe integrates the O<sub!>3 amperometric micro-sensor et the other probe is a temperature sensor.</sub!>
- The CTD48 system for an online application in the environment. The probe integrates in the head several measuring sensors. The titanium protection cage contains an O3 amperometric micro-sensor, a pH sensor and a temperature sensor. A pressure sensor can also be added. Data measurement are operated by the embedded electronic in the probe’s body.
Measurement principle
Ozone get through the membrane only pervious to gases. The reaction between O3 and the redox catalyst create a product that is then electrochemically oxidized at the working electrode. The generated current resulting from this reaction is proportional to the O3 quantity in the environment.
Applications
- Sewage network protection and monitoring
- Staff protection before intervention
- Laboratory measurement
Advantages
- Immersed measurement without sampling
- No interference with thurbidity
- Automatic temperature compensation
- Portable / laboratory and continuous measurements
- Data display on screen
- Extracting data to computier via USB
| Measurement principle | Amperometric measurement with T° compensation |
|---|---|
| Measurement range | 20 µg/l...10 mg/l O₃ |
| Measurement resolution | 2 µg/l |
| Accuracy | 2 % |
| Response time | T 90% < 5 seconds |
| O3 consumption | negligible |
| Additionnal sensors | temperature |
| Interferences on measurement | not against oxygen and chlorine, but signal interferences against H2O2 if the concentration is more than 2 Vol.% |
| Micro-sensor O3 lifetime | 5 to 10 months, may be influenced by the samples matrix |
| Power supply | 6 batteries Mignon / 220 VAC, charger supplied |
| Housing material | O3 probe - titanium / temperature sensor - plastic |
| Dimensions (d x L) | O3 probe - 17 mm x 205 mm / temperature - 12 mm x 120 mm |
| Interface | data display on integrated screen - O2 (mg/l) / T° values RS-232 / USB (option) to a computer, software not provided, free download type «HYPERTERMINAL» String ASCII / 2 seconds Conversion by the software for access to Lotus 1-2-3 or Excel calculation software |
| Maintenance | Distilled water cleaning of the measuring diaphragm after every use |
| Medium / sample temperature | -2...30 °C |
