Asair AO-09 Oxygen Sensor Module - Medical Grade, 0-100% O2

The AO-09 provides a linear millivolt-level output, typically between 9 mV and 13 mV when measuring 210 mBar of oxygen pressure. To read this signal, you must connect it to a high-impedance data acquisition system or amplifier with an input impedance of at least 10 kΩ. The sensor uses a standard 3P2.5 connector, and no external power supply is required for the sensing element itself.

Yes, the AO-09 is well-suited for portable medical devices. Its lightweight ABS housing (36g), any-orientation mounting capability, and lack of an external power requirement make it ideal for integration into portable oxygen concentrators, handheld analyzers, and transport ventilators. The fast response time (<15s T90) ensures timely feedback for patient safety and device control.

The sensor features integrated temperature compensation specifically designed for the medical operating range of 0°C to 40°C. This compensation limits the measurement error to less than 2% O2 equivalent across this temperature span. For applications outside this range or requiring ultimate precision, consulting the sensor's detailed performance curves or implementing additional system-level calibration may be necessary.