Extech SDL150 Data Logging Air Quality Meter, +50°C Max, Battery-Powered

The FLIR Dissolved Oxygen Meter/Datalogger is a versatile device that records data on an SD card in Excel format, making it easy to transfer to a PC for analysis. With a dual backlit display for Oxygen Concentration and Temperature.

It Measures dissolved oxygen from 0 to 20.0mg/L and 0 to 100.0% oxygen
It has Temperature measurement range from 32 to 122°F (0 to 50°C)
Automatic temperature compensation for accurate readings
Stores 99 readings manually and 20M readings via 2G SD card
User programmable sampling rate for flexibility
Min/Max and Data Hold functions for convenience