Oxygen Indicators Functionality and Operability Best Suited for Measuring Oxygen COSMOS Personal Gas Monitor XX-2100 Series Oxygen indicator Detection Principle Oxygen concentration Galvanic cell sensor Features Can be used continuously for 5000 hours. Available with loud buzzer, alarm lamp from 4 dimensions, peak hold function. Available with TWA (Time Weighted Average) gas concentretion display , memory of peak value, and peak hold function. Thin, lightweight design. Available with gas calibration kit (Optional). Specifications Model Gas Detected Detection Principle Sampling Method Detection Range (Service Range) Resolution Indication Accuracy *1 Alarm Set Value 1st stage 2nd stage Response Time *2 Display Mode Alarm Mode Functions Operation Temperature Operation Air Pressure Power Source Battery Life *3 Dimensions Weight Standard Accessories XO-2200 Oxygen (O2) Galvanic cell Diffusion 0-25vol% (25-50vol%) 0.1vol% Within ±0.5vol% 19.5vol% 18.0vol% 20s or less LCD (Manual backlight) Buzzer sounds, flashing red light, vibrator Remaining battery level, peak hold, memory of peak value, alarm functions except gas alarm (sensor malfunction, remaining battery level, air-adjustment malfunction) 10 to 40 , 3090%RH (non-condensing) Air pressure ±10% 1 × AAA alkaline dry cell (LR 03) Up to 5000 hours (at 20 without alarm) W65×D22×H64mm (excluding protrusions) Approx. 75g (including battery) 1 × AAA alkaline dry cell, 1 × safety pin adaptor (with fixing screw) *1 Under identical measuring conditions. *2 Assuming 90% response and operating at 20 ± 2 *3 Battery life may vary with ambient conditions, conditions of use, storage period, battery manufactur es, etc.