Reference: RBD-3942
Brand: DFRobot
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Current Manufacturing Date: 28-09-2025
The ASAIR AO-02 Oxygen Sensor is a high-precision electrochemical oxygen detection sensor designed for accurate and stable measurement of oxygen concentration from 0 to 100% Vol. O₂. Utilizing a partial pressure electrochemical principle, it generates a linear millivolt output without requiring any external power supply, making it highly energy-efficient and easy to integrate. With a fast T90 response time of less than 5 seconds and excellent temperature compensation, the AO-02 delivers consistent readings even under varying environmental conditions. Its molded and robust construction ensures durability in demanding applications such as vehicle exhaust monitoring, combustion analysis, and industrial oxygen detection systems. Featuring a standard 3-pin Molex connector, this sensor integrates easily into portable or stationary gas analysis systems. Featured By RoboticsBD.
Product Images are shown for illustrative purposes only and may differ from the actual product.
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Wide Oxygen Detection Range – Measures from 0% to 100% oxygen concentration accurately.
Fast Response Time – T90 response under 5 seconds ensures quick detection.
No External Power Required – Operates through electrochemical reaction, simplifying design.
Stable Linear Output – Provides 9–13mV signal in air with minimal baseline offset.
Excellent Temperature Compensation – Maintains accuracy between 0°C and 40°C.
Low Baseline Drift – Baseline offset below 20μV for reliable long-term monitoring.
Durable Molded Design – Optimized for extended operational life.
Standard 3-Pin Molex Connector – Easy and secure electrical connection.
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Vehicle Exhaust Monitoring – Measure oxygen concentration in combustion gases.
Industrial Oxygen Detection – Monitor oxygen levels in controlled environments.
Environmental Air Analysis – Analyze oxygen concentration in air quality systems.
Combustion Gas Analysis – Optimize fuel efficiency and combustion performance.
Portable Gas Analyzers – Suitable for handheld oxygen monitoring devices.
Laboratory Research – Reliable oxygen detection in experimental setups.
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| General Specifications | |
| Product Name | ASAIR AO-02 Oxygen Sensor |
| Operating Principle | Partial Pressure Electrochemical |
| Measurement Range | 0–100% Vol. O₂ |
| Output Signal | 9–13 mV in Air |
| Linearity | Linear 0–100% Vol. O₂ |
| Response Time (T90) | < 5 Seconds |
| Response Time (T99.5) | < 40 Seconds |
| Baseline Offset | < 20 μV |
| Temperature Compensation | < 2% O₂ Equivalent (0°C–40°C) |
| Operating Temperature | 0°C to +50°C |
| Operating Pressure | 0.5 – 2.0 Bar |
| Differential Pressure | 0 – 500 mBar |
| Operating Humidity | 0–99% RH (Non-condensing) |
| External Load Resistor | ≥ 10 kΩ |
| Connector Type | 3-Pin Molex Header (22-29-2031) |
| Recommended Housing | Molex 22-01-2035 + 08-45-0110 |
| Shipment Weight | 0.042 kg |
| Shipment Dimensions | 7 × 5 × 4 cm |
Please allow 5% measuring deviation due to manual measurement.
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1 x ASAIR AO-02 Oxygen Sensor
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Current Manufacturing Date: 28-09-2025
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