Simple to use . . . accurate reliable results One touch calibration . . . 100% O2 or air Long battery life . . . 13,000 hrs of use Advanced sensor technology Certified ISO 9001:2008 QA System This palm size oxygen analyzer features an advanced galvanic oxygen sensor that measures from 0.05% to 100% oxygen over a 32 month operating life with no maintenance required. 13,000 hours of battery use and wide variety of optional accessories make it an ideal cost effective choice for checking O2 levels of compressed air scuba tanks and Nitrox mixes. Accuracy: < +2% of FS range under constant conditions Analysis: 0-100% oxygen Application: Verify O2 content of scuba compressed air tanks Calibration: Certified dry 100% oxygen or air after 8 hrs of use Compensation: Temperature Connections: 1x16 mm thread (see options below) Controls: Soft touch keypad for ON/OFF and Calibration Dimensions: 2.72” x 4.1” x 1.35”; weight 7 oz. (196 grams) Display: 3 digit LCD 1.1” x .625”; resolution 0.1% O2 Flow Sensitivity: None between 0.2 to 10 liters per minute Humidity: Non-condensing 0-95% RH Linearity: + 1% under constant conditions Pressure: Inlet - ambient or regulated; vent - atmospheric Power: (2) 1.5V AA alkaline batteries; 13,000 hrs of use Response Time: 90% of final FS reading in 10 seconds Sensitivity: < 0.5% of FS range Sensor: AII-11-75-PO2 D Sensor Life: 32 months in air at 25ºC and 1 atmosphere Storage Temp.: -20º to 60ºC (-4ºF to 140ºF) on intermittent basis Temp. Range: 5º to 45ºC (41ºF to 113ºF) Warm-up Time: None Warranty: 12 months analyzer; 12 months sensor