Dissolved Oxygen Meter Lutron DO 5512SD uses a polarographic oxygen probe with a built-in temperature sensor for accurate DO and temperature readings. It features simple, software-free data logging to an SD card. This Portable Dissolved Oxygen Meter allows users to easily export readings, including full timestamp, to Excel for further analysis. Ideal as an Oxygen Detector in field or lab settings, offering precision and convenience in one compact device. Applications:Fish hatcheries, paper industry, plating industry, Aquariums, beverage,  Food processing, etc.