Asair AO-03 Oxygen Sensor Module - 1-25% Vol. Linear Output

Name: Asair AO-03 Oxygen Sensor Module - 1-25% Vol. Linear Output
Brand: Asair
SKU: SENS-0911
Price: 1219.00 INR
Availability: OutOfStock

₹1,219.00 (Inclusive of all taxes)

Out of Stock

The Asair AO-03 is a plug-and-play electrochemical oxygen sensor module designed for direct integration into air quality monitoring systems, oxygen alarms, and commercial air purification equipment, providing a linear current output proportional to oxygen concentration.

Features

Linear current output (0.1±0.03 mA in air) across a 1 to 25% Vol. O₂ measurement range.
Self-powered electrochemical cell requiring no external power supply for sensor operation.
Fast response with a T90 time of less than 15 seconds for dynamic monitoring.
Robust environmental tolerance from 0 to 50°C and 5-99% RH non-condensing.
Compact, ready-to-use module ideal for integration into fixed industrial and commercial systems.

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Description

The Asair AO-03 is an electrochemical oxygen sensor module that generates a linear current signal directly proportional to the volumetric concentration of oxygen in the ambient environment. Its core sensing element operates without an external power supply, functioning as a self-contained galvanic cell for simplified system integration.

Designed for stability and reliability in continuous monitoring applications, the module offers a quick response to changes in O₂ levels, making it suitable for safety alarms and process control. Its specifications are validated under standard conditions of 20°C, 50% RH, and 1013 mbar, with performance maintained across a broad operational envelope.

Key Features

Electrochemical sensing principle for direct, linear oxygen concentration measurement.
Plug-and-play module design eliminates the need for complex signal conditioning circuitry.
Wide operating humidity range (5-99% RH non-condensing) ensures performance in varied climates.
Stable output signal with minimal drift for accurate and reliable long-term monitoring.
Compact form factor (approx. 9 x 6 x 2 cm) facilitates easy installation in confined spaces.
Designed for integration into OEM equipment for mining, manufacturing, and air quality systems.

Applications

Fixed oxygen monitoring and alarm systems in underground mining and tunneling operations.
Air quality detection and control within commercial HVAC and air purification units.
Process gas monitoring in steel manufacturing and petrochemical plant safety systems.
Laboratory and educational setups for environmental oxygen concentration measurement.
Integration into portable or stationary multi-gas analyzers for occupational health.

Technical Specifications

Item Type	Oxygen Sensor
Model No.	AO-03
Signal Output	0.1±0.03 mA in Air
Measurement Range	1~25% Vol. O₂
Operating Temperature	0 to 50°C
Pressure Range	±20% Atmospheric
Operating Humidity	5-99% RH non-condensing
Response Time (T90)	<15 s
Shipping Weight	0.017 kg
Shipping Dimensions	9 × 6 × 2 cm

Frequently Asked Questions

Does the AO-03 sensor require an external power supply to operate?

No, the AO-03 is a self-powered electrochemical sensor. It generates its own current signal (0.1±0.03 mA in air) proportional to oxygen concentration without needing an external voltage or current source for the sensing element itself. However, this current output signal will typically be read by an external amplifier or data acquisition system.

What is the typical lifespan or calibration interval for this oxygen sensor?

The sensor's specified data is valid for 3 months after its manufactured date under standard conditions (20°C, 50% RH, 1013 mbar). For continuous accurate measurement, it is crucial to follow the oxygen analyzer manufacturer's instructions for periodic calibration and sensor replacement, as electrochemical cells have a finite operational lifetime dependent on environmental exposure and gas concentration.

How do I interface with the AO-03 module's output signal?

The module provides a low-level current output. To read this signal with a microcontroller (like an Arduino) or a PLC, you will need a current-to-voltage converter (a precision resistor, e.g., 100Ω) and likely an operational amplifier circuit to scale the signal to an appropriate voltage range (e.g., 0-5V) for your ADC input. Always ensure your interface circuit is properly designed for low-current measurement.

Can this sensor be used to measure oxygen levels in controlled atmospheres or modified air?

Yes, the AO-03 is designed for the 1-25% Vol. O₂ range, making it suitable for monitoring oxygen in controlled environments such as inert gas blanketing, food packaging, or laboratory glove boxes, in addition to standard air quality monitoring. Ensure the ambient temperature and pressure remain within its specified operating limits.