Location -> Products -> Water Treatment -> On-line Electrode -> Dissolved Oxygen Electrode
Type：CXNS-120 dissolved oxygen electrode
Illustrate：It is widely use in the applications like water treatment , hydrological monitoring , wastewater treatment ,swimming pools fish ponds and fertilizer . Chemical ,biological and other fields about the oxygen content monitor .
CXNS-120 Dissolved Oxygen Electrode
Main Features
1.Sensitive response ,good stability
2.Do not need to replace the diaphragm and the electrolyte .
3.Suitable for variety of waste water , the diaphragm is difficult to be damaged, anti-pollution .
Principle
NS-120 type oxygen electrode is a diaphragm polarographic (clark) sensor . By conductibility electrolyte which connect one cathode and one anode to compose .Between the cathode and the anode ,the proper polarization voltage can deoxidize the O2 at the Cathode electrode .
Cathode reaction:O2＋2H2O ＋4e → 4OH-
Anode reaction :4Ag ＋4Cl- → 4AgCl + 4e
These chemical reactions produce the current which is proportional to the O2 in the measured solution’s partial pressure .
Main Parameters
| Measuring principle | current measurement/polarography |
| Detection limit | <40ppb oxygen percent |
| Response time | the oxygen content decreased 90%<2min ,when the temperature is 25 C |
| Residual current | the residual room temperature signal<2% FS in the anaerobic medium |
| Operating temperature | 0~60C |
| Pressure | 0~4bar |
| Electrode signal | 20~80nA at 25 Celsius degree (can customize under the requests) |
| Temperature compensation | thermal resistance value can customize it under the user’s requests |
| Electrode size |
diameter (12mm) ,length(120mm)(PG13.5 screw thread interface), can customize under the requests |
| Electrode material | 316L stainless steel shell ,POM diaphragm cap |
| Permeable membrane | enhanced steel mesh PTFE and poly siloxane film |
