Oxygen (O2) Gas Sensor, 0~100% Linear Output

High-performance oxygen gas sensors for sale, utilizing shared voltage electrochemical technology with a detection range spanning 0–100%. Sensor output voltage remains stable at 9–13 mV (in air), interface compatible with Molex 3-pin connectors, full-range linearity and temperature compensation are provided. The O2 sensor housing is constructed from durable red ABS material, suitable for medical ventilators, industrial detection, and environmental monitoring equipment.

Feature

• SUCH oxygen gas sensors feature full-range 0-100% linear output, professionally calibrated and temperature-compensated at the factory.
• The oxygen sensor is an electrochemical sensor designed to detect oxygen concentration. Featuring a Molex 3-pin connector and a molded body design, it offers rapid response and extended service life.
• Operating without an external power source, this oxygen sensor is suitable for various instruments requiring oxygen concentration monitoring. It finds extensive application in automotive, environmental protection, coal mining, petrochemical, and other industries.

Dimension (unit: mm)

Application Circuit Diagram

• Short-circuit the positive and negative terminals (Vsensor+ and Vsensor-) of the oxygen gas sensor. The ADC value (MCU−ADC) read at this point is recorded as A₀.
• Place the gas sensor in air. The ADC value read at this point is recorded as A₁.
• Next, place the sensor in the target environment. The ADC value read at this point is recorded as A_x.
• The formula for calculating oxygen concentration in the target environment is: Oxygen Concentration = (A_x - A₀) × 20.9÷(A₁ - A₀) × 100%

Pin Definition

Pin	Definition
1	Positive Pin
2	Negative Pin
3	Negative Pin