Japan FIGARO dissolved oxygen sensor - KDS-25B
1) Not affected by acidic gases such as CO2;
2) Long service life (expected life of 3 years);
3) High accuracy (±5% full scale);
4) Built-in thermistor allows temperature compensation;
5) No preheating required, no external power supply needed, short response time;
6) Unique galvanic-type sensor specially designed for water quality detection and control
Product Introduction
1. Description of Japan FIGARO dissolved oxygen sensor KDS-25B:
Yuasa dissolved oxygen sensorKDS-25B is a unique galvanic-type sensor specially developed for water quality control. The most notable features of this dissolved oxygen sensor are its long service life and immunity to CO2.
Dissolved Oxygen SensorKDS-25B uses a special acidic electrolyte, with the cathode made of inert metal gold and the anode made of metal lead. Oxygen diffuses through the fluororesin membrane to participate in the oxidation-reduction reaction, forming an oxygen-lead battery. The current generated by the oxidation-reduction reaction is then converted into a voltage output by an internal resistor. The generated current is proportional to the concentration of dissolved oxygen, or strictly speaking, proportional to the partial pressure of oxygen (the higher the dissolved oxygen content, the more oxygen molecules pass through the fluororesin membrane to participate in the reaction). KDS-25B is one of the ideal sensors for environmental monitoring and water quality detection.
2. Features of Japan FIGARO dissolved oxygen sensor KDS-25B:
1) Not affected by acidic gases such as CO2;2) Long service life (expected life of 3 years);
3) High accuracy (±5% full scale);
4) Built-in thermistor allows temperature compensation;
5) No preheating required, no external power supply needed, short response time;
6) Unique galvanic-type sensor specially designed for water quality detection and control
3. Applications of Japan FIGARO dissolved oxygen sensor KDS-25B:
1) Aquaculture industry;
2) Online environmental monitoring;
3) Water source monitoring and sewage treatment industry;
4) Water pollution investigation in education and scientific research fields;
4. Specifications of Japan FIGARO dissolved oxygen sensor KDS-25B:
| Item | Model | |
| KDS-25B | ||
| Measurement Range | 0~80mg/L dissolved oxygen | |
| Accuracy in water at 25˚C±1˚C | ±5% (full scale) | |
| Operating conditions | Atmospheric pressure | 81~203kPa (equivalent to a water depth of 10m) |
| Temperature | 5~35˚C | |
| Relative humidity | 10~90%RH (non-condensing) | |
| Thermal time constant | Within 10 minutes | |
| Initial output voltage in clean air under standard test conditions | 8.0~15.0mV | |
| Standard Test Conditions | Atmospheric pressure | 1013±5hPa |
| Temperature | 25˚C±1˚C | |
| Relative humidity | 60±5%RH | |
5. Sensitivity characteristics of Japan FIGARO dissolved oxygen sensor KDS-25B (in 25˚C water):
The figure below shows typical dissolved oxygen sensitivity characteristic curves, all measured by our company
Measured under standard test conditions (see back).
The horizontal axis represents the concentration of dissolved oxygen in water (ppm),
The vertical axis represents the sensor output voltage (mV).
6. Temperature characteristics of Japan FIGARO dissolved oxygen sensor KDS-25B (typical):
The figure below shows typical characteristic curves affected by temperature
The vertical axis represents the sensor output voltage (mV).
7. Dimensions of Japan FIGARO dissolved oxygen sensor KDS-25B
