O2-A3 Oxygen Gas Sensor for Safety Applications Medical Field

Price	Negotiable
MOQ	1
Delivery Time	3-5workingdays
Brand	Alphasense
Place of Origin	UK
Model Number	O2-A3
Packaging Details	Standard packaging
Payment Terms	L/C, D/A, D/P, T/T, Western Union, MoneyGram
Supply Ability	5000PCS

Product Details

Place of Origin	UK	Storage period	6
Packaging Details	Standard packaging	Pressure range	80 To 120kpa
Model Number	O2-A3	Supply Ability	5000PCS
Humidity range	5 To 95	Weight	<16.5g
Load resistor	47 To 100	Brand Name	Alphasense
Payment Terms	L/C, D/A, D/P, T/T, Western Union, MoneyGram	Delivery Time	3-5workingdays
Price	Negotiable	Minimum Order Quantity	1
Temperature range	-30 To 55℃

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