The output of the AO2 sensor changes with temperature, but the thermistor is gradually integrated to compensate for these changes. The thermistor helps provide the AO2 with a stable output over a wide temperature range. The AO2 PTB-18.10 oxygen sensor used in the oxygen index meter is a consumable item. When exposed to air, a chemical reaction begins.AO2 Product Parameters:(1) Output: 9-13 mV in air(2) Range: 0- O2(3) Accuracy: 0.01% O2(4) Expected service life: 360,000% O2 hours at 20C, 286,000% O2 hours at 40C, or two years in air at STP(5) T90 response time: Less than 5 seconds(6) T99.5 response time: Less than 40 seconds(7) Signal in oxygen: 100 1%(8) Linearity: 0- O2(9) Zero offset: Less than 20 V(10) Temperature range: -20C to +50C(11) Temperature compensation: Less than 2% variation from 0C to 40C(12) Differential pressure range: 0-500 mbar maximum(13) Absolute pressure range: 500-2000 mbar(14) Relative humidity range: 0-99% non-condensing(15) Long-term output drift: Less than 10% signal loss per year(16) Recommended load resistance minimum: 10 kNote: Due to different production batches, the product appearance may vary slightly, which does not affect performance.Color: RedMaterial: PlasticPackage Contents:1 x Oxygen SensorOnly the above package content is included; other products are not included.Note: Light reflection and differences in display screens may cause the color of the item in the image to appear slightly different from the actual product. Measurement may vary by +- 1-3 cm due to allowable error.