Project Description
Industrial Online Dissolved Oxygen Sensor for Waste Water Treatment
The optical dissolved oxygen sensor measures dissolved oxygen using the principle of oxygen dynamic luminescence quenching technique. When blue light excites sensor film, the sensing film emits red light. The
phase difference between the blue excitation and returned red emission is measured, and the result is
used to calculate DO concentration.
Dissolved Oxygen Features
0-20mg/L or 0-200% Saturation
0~50 ℃；IP68 rating
Membraneless, no electrodes design
No oxygen consumption
Flow Independent
Automatic temperature compensation
No H2S Interference
Low Drift, fast response, and more accurate
Low Maintenance, low operating cost
Easy sensor cap replacement
RS-485; MODBUS protocol compatible
Technical Parameters
| Range | 0-20mg/L or 0-200% Saturation |
| Response Time | 10 sec |
| Housing IP Rating | IP68 |
| Accuracy | 1% |
| Drift | <1% per year |
| Working Temperature Range | 0 ~ 50℃ |
| Temperature Accuracy | ± 0 . 2 ℃ |
| Interface | Support RS-485， MODBUS protocols |
| Construction | ¾ inch NPT |
| Power Requirements | DC 6~12V +/-5%， current <50mA |
| Temperature Sensor Type | NTC |
| Sensor OD | 26mm |
| Sensor Length | 177.5 mm |
| Cable Length | 10m standard; 5m, 15m, and 30m optional |
| Calibrations | Support one point and two-points calibrations |
| Sensor Cap Lifetime | 1 Year（at normal use） |
| Body materials | POM and Stainless steel |
