OPTICAL OXYGEN SENSOR DO-1
The optical oxygen sensor is designed for measurements of concentration of oxygen dissolved in liquid. It has several advantages in comparison with membrane, galvanic sensors.
Characteristic features:
- Immediate readiness for work.
- No electrolyte.
- Does not use up the oxygen.
- Does not require flow of the measured liquid.
- Fast reaction time.
- In case of standard measurements calibration is practically unnecessary.
- Resistant to optical and chemical interference.
- Long-lasting work without changing the luminescent cap (8000 h).
- In case of lack of activity the luminescent cap does not wear up.
- Practically maintenace-free.
The sensor cooperates exclusively with CO-404 meter adjusted to optical measurements.
Operation
The sensor works basing on changes of activity of the fluorescent dye, which covers the replaceable luminescent cap. The fluorescence reduction affected by light is dependent on oxygen concentration in the tested liquid. The higher concentration, the faster fluorescence reduction. This dependence is calculated with use of an appropriate formula. DO-1 is equipped with built-in temperature sensor used for automatic temperature compensation.Accessories
The sensor is equipped with a calibration vessel used for calibration and storage in optimally humid environment.| Oxygen measurement | Range | 0 ÷ 20 mg/l ; 0 ÷ 200 % |
|---|---|---|
| Accuracy | ± 0.30 mg/l | |
| Stabilisation time (T90) | 20 s. | |
| Offset | < 0,10 mg/l | |
| Repeatability | < 0,15 mg/l | |
| Drift | 5 % / year | |
| Working time of the luminescent cap | ≥8000 hours | |
| Temperature measurement | Range | 0 ÷ 50 °C |
| Accuracy | ± 0,5 °C | |
| Communication protocol | RS-485 | |
| Cable length | 3 m. | |
| Sensor's dimensions | φ = 16 mm, L = 105 mm | |