Asair AO-08 Medical Oxygen Sensor Module

No, the AO-08 is a self-powered electrochemical sensor. It generates its own millivolt-level output signal (9–13 mV in 21% oxygen) proportional to the oxygen partial pressure, requiring no external power supply for its basic sensing function. However, this signal will typically need to be conditioned and amplified by an external analyzer circuit.

The sensor provides a linear analog voltage output relative to oxygen concentration. In ambient air (21% O₂), the output is typically between 9 and 13 mV. This low-level signal must be connected to a high-impedance input of a dedicated oxygen analyzer board or a precision instrumentation amplifier circuit to be read accurately by a microcontroller or data acquisition system.

The AO-08 is rated for an operating temperature range of 0°C to 50°C and a pressure range of 0.5 to 2.0 bar. It includes temperature compensation to maintain accuracy within 2% O₂ equivalent between 0°C and 40°C. The sensor can operate in 0–99% relative humidity, but condensation must be avoided to prevent damage.

Yes, the Asair AO-08 is specifically designed as a sensing component for medical oxygen analyzers used in life-support equipment like ventilators and anesthesia machines. Its design and performance comply with the medical device standard ISO 80601-2-55, ensuring it meets the requirements for accuracy, reliability, and safety in critical care applications.