4O2 Electrocemical oxygen sensor 4O2 Electrochemical oxygen sensor Application Field High sensitivity High precision Linear output Unique leak- proof structure Oxygen Oxygen Oxygen Oxygen monitoring for industrial use monitoring in environmental protection field monitoring in mine area detection in storage area Product description 4O2 oxygen sensor is a galvanic cell type sensor, which uses the reduction reaction of oxygen on the working electrode and the corresponding reduction reaction of cathode material to generate current. The current generated is proportional to the oxygen concentration. The oxygen concentration can be determined by testing the current size. PERFORMANCE Measure Gas Measuring Range Overload Sensitivity Zero Drift Output linearity Operating Temperature Relative Humidity 1 ± 0. 1 Standard atmospheric pressure Operating Pressure Range LIFE WARRANTY Long-term Output Drift Recommended Storage Environment Expected Operating Life Shelf Life Warranty Period <5% Every year 0-20C in a closed container 24 months in the air Original package is 6 months 12 Months Ningxia MaiYa Sensor Technology Development Co., LTD

4O2 Electrocemical oxygen sensor Temperature characteristic Figure 2 : Temperature and compensation compensation curve Long-term stability Figure 3 : Long-term stabilityFigure 3 : Long-term stability Note: The above life test data are only the test results in the laboratory, and the actual service life should be determined according to the field environment usage. Ningxia MaiYa Sensor Technology Development Co., LTD

4O2 Electrocemical oxygen sensor Cross-sensitive data Toxic gases are not too cross-sensitive to 4O2 oxygen sensors at allowable concentrations. At high concentrations, highly oxidized gases (such as percent grade ozone, chlorine gas) can interfere with the diffusion of oxygen, but most ordinary gases do not affect them. Safety note ● Welding lead, no contact sensor; ● Power-on aging time is not less than 30min; ● Avoid long- term contact with organic volatile solvents and high concentration of other solvent steam; ● Storage or use in a suitable environment to avoid acid-alkali environment; ●...