1 PC ME4-SO2 Sulfur Dioxide Gas Sensor

ME4-SO2 sulfur dioxide gas sensor is constant potential electrolysis type. Oxidation-reduction reaction with sulfur dioxide and oxygen take place respectively on the working electrode and on the counter electrode. The process releases electric charge and generates current. The current is in direct proportion to the concentration of sulfur dioxide. So the concentration of the target gas could be got by measuring the value of current. Application It is used for hydrogen sulfide detection in industrial occasions and environmental protection field. Features Low power consumption High precision High sensitivity Wide linear range Good anti-interference ability Excellent repeatability and stability Specifications Detection gas Sulfur dioxide (SO2) Detection range 0～20ppm Max range 200ppm Sensitivity (0.8±0.2) µA/ppm Resolution 0.1ppm Response time (T90) ≤30S Bias voltage 0mV Load resistance 10Ω (recommended) Repeatability ＜2% Output value Stability (/month) ＜2%  Outp