The Eco Sensors model UV-100 ozone analyzer is for general purpose measurement of ozone in air. Its range is .01-900 ppm (v) with 2% accuracy and it includes a built-in data logger. The UV-100 weighs only 2.1 kg (4.7 lb) it is powered by an AC adapter or 12 V external battery and is equally versatile for the laboratory or for process monitoring. The outputs are digital display 0-2.5 VDC and 4-20 mA. The instrument features LEDs to indicate calibration is due the sample line filter should be replaced and that the sampling area is above the danger limit of .1 ppm.