Memosens COS22D – Digital Optical Dissolved Oxygen Sensor
The Endress+Hauser Memosens COS22D uses optical luminescence quenching to measure dissolved oxygen. Unlike amperometric sensors, it requires no polarization time, no electrolyte refilling and has a much longer service life.
Key Features
- Measuring principle: Optical (luminescence quenching)
- DO range: 0 to 20 mg/L (0 to 200% saturation)
- Temperature range: 0 to +50 °C
- Pressure: up to 10 bar
- Memosens digital communication
- No polarization time needed
- No electrolyte refilling
- Long cap lifetime: up to 2 years
- Process connections: Pg 13.5, M12
Applications
Wastewater aeration control, aquaculture, environmental monitoring, drinking water, process water DO measurement.
Technical Specifications
| Parameter | Value |
|---|---|
| DO range | 0–20 mg/L (0–200% saturation) |
| Temperature range | 0 to +50 °C |
| Max pressure | 10 bar |
| Communication | Memosens (inductive digital) |
| Cap lifetime | Up to 2 years |




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