The output of the AO2 sensor changes with temperature, but the thermistor is gradually integrated to compensate for these changes. The thermistor is used to give the AO2 a very stable output over a wide temperature range.<br> The AO2 PTB-18.10 oxygen sensor used in the oxygen index meter is a consumable item. When it comes into contact with air, a chemical reaction begins.<br> AO2 Product Parameters:<br> (1) Output:9-13mV in air<br> (2) Range:0-100%O2<br> (3) Accuracy:0.01%O2<br> (4) Expected service life:360,000%O2 hours at 20, 286,000%O2 hours at 40, or two years in air at STP<br> (5) T90 response time:Less than 5 seconds<br> (6) T99.5 response time:Less than 40 seconds<br> (7) 100% oxygen in signal:1001%<br> (8) Linearity:0-100%O2<br> (9) Zero offset:Less than 20V<br> (10) Temperature range:-20-+50<br> (11) Temperature compensation:Less than 2% variation 0 to 40(as shown)<br> (12) Differential pressure range:0-500mbar Max<br> (13) Absolute pressure range:500-2000mbar<br> (14) Relative humidity range:0-99% non-condensing<br> (15) Long-term output drift:Less than 10% signal loss/year<br> (16) Recommended load resistance min:10kohm<br> Note:Due to different production batches, the product appearance slightly, which does not affect the use.<br> Colour:Red<br> Material:Plastic<br> Package Contents:<br> 1 * Oxygen Sensor<br> Only the above package content, other products are not included.<br> Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.