The MCSensors SO-XX-XXX oxygen sensor manual explains its principle, applications, specifications and usage guidelines.
The sensor operates on the limit‑current principle: oxygen ions in a zirconia electrolyte carry current, and the resulting saturation current is proportional to the surrounding oxygen concentration. This design provides a wide measurement range, high accuracy, low temperature dependence, long life and requires only a single-point calibration.
The device is used for combustion control, exhaust monitoring, medical oxygen concentrators, incubators, food packaging, safety monitoring in sealed spaces, climate control and various industrial processes. Technical data include model‑specific measurement ranges (e.g., 0.01 %–96 % O₂), output currents up to 412 µA, accuracy within 1 % of range, sensor voltage 0.7‑1.6 V, heating voltage 3.6‑4.4 V, pre‑heat time about 2 minutes, and maximum operating temperatures up to 350 °C. This manual is written in Chinese.
| Measurement Range (SO-XX-001) | 0.001 %–0.0001 % (10 ppm‑1 ppm) |
|---|---|
| Measurement Range (SO-XX-960) | 0.01 %–96 % |
| Output Signal | 0 – 412 µA (depends on model and O₂ concentration) |
| Accuracy | ≤1 % of range (2 % for SO-XX-001) |
| Sensor Voltage | 0.7 – 1.6 V |
| Heating Voltage | 3.6 – 4.4 V (1.3 – 1.8 W) |
| Pre‑heat Time | ≈2 minutes |
| Maximum Package Temperature | ≈250 °C (measurement at room temperature) |
| Maximum Ambient Temperature | 350 °C |
It uses the limit‑current principle, where the saturation current in a zirconia electrolyte is proportional to the ambient oxygen concentration.
The pre‑heat time is about 2 minutes.
The output current ranges from 0 to 412 µA, depending on the sensor model and oxygen concentration.
The accuracy is within 1 % of the measurement range, except for the SO-XX-001 model which is within 2 % of its range.