O2-A3 Oxygen Gas Sensor for Safety Applications Medical
Field Application Scenarios: - Safety Applications: Since it can accurately measure oxygen
concentration and has good environmental adaptability, it is
suitable for use in places where ensuring the safety of personnel
in terms of oxygen levels is crucial, such as mines, confined
spaces, and industrial plants.
- Medical Field: Although specific medical applications may require
further adaptation and compliance with relevant medical standards,
it can potentially be used in some medical gas - related equipment
like oxygen concentrators, oxygen analyzers, medical gas alarm
systems, and anesthesia machines.
- Air Quality Monitoring: To monitor the oxygen content in the air,
which can provide data support for environmental research and air
quality assessment.
Electrical and Mechanical Considerations: - The sensor is a plug - in replacement sensor for hand - held gas
detectors that use an O2 - A3 sensor.
- Manufacturers do not recommend soldering to the pins. Pin sockets
can be purchased from Andon distributors. Users can click on the
relevant link on the distributor's website, select the brand PDF,
find the sensor, and then search for the Andon part number for the
sensor's socket.
| Warranty & Lifespan | Warranty Period | 3 - year warranty | | | Expected Operating Life | Operates for over 36 months until output reaches 85% of original at 20.9% O₂; Output change < 2% over 3 months | | Response Time | t90 | < 15 seconds (e.g., for 20.9% to 0% O₂ change with 47W load resistor) | | Environmental Resistance | Humidity Resistance | < 0.7% humidity affect; Continuous operation: 5 - 95% rh (non - condensing); Short - term: Up to 99% rh (non - condensing) | | | CO₂ Sensitivity | < 0.1% | | | Pressure & Temperature Dependence | Good performance in varying pressure conditions; Ideal for safety apps (vs partial pressure sensors) | | Measurement Range | Oxygen Concentration | 0.1 - 20.9% O₂ | | Output Characteristics | Output Current (22℃, 20.9% O₂) | 55 - 85 μA | | | Zero Current Output (0% O₂, 99.99% N₂, 22℃) | < 2.5 μA | | | Linearity | 0.6% O₂ deviation at 10% O₂ | | | Output Drift | < 1% change in 3 months | | Physical Specifications | Size | Diameter: 20mm; Overall dimensions: 17.4 mm x 20.3 mm | | Application Scenarios | | Safety (mines, confined spaces, etc.); Potential medical gas - related equipment (with adaptation); Air quality monitoring | | Electrical & Mechanical | Replacement & Soldering | Plug - in for hand - held gas detectors using O2 - A3; Not recommended to solder pins; Pin sockets available via Andon distributors | | Brand & Design | Technology & Advantage | Capillary flow control; Lead - free, longer lifetime than lead - based sensors; Minimizes leaks, reduces mid - contract servicing; Part of Alphasense ‘D’ family, available in different sizes |
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