HI 2400 is a dissolved oxygen benchtop meter with automatic calibration and a % or mg/L (ppm) measurement range. The measurement is automatically compensated for altitude and salinity compensation based on the user settings for altitudes up to 4000 m and 40 g/L for salinity. Calibration is performed at one or two points at 0% using HANNA’s HI 7040 solution or 100% in air. Measurements are automatically temperature-compensated by using the polarographic DO probe with a built-in temperature sensor. This probe features screw cap membranes for easy replacement. With a built-in logging function, measurements are stored in non-volatile memory and can be transferred to a PC through the USB port using the optional HI 92000 software and HI 920013 USB cable. The software is provided with an exclusive online guide of all the commands available and allows data printing, plotting and exporting. https://agg-blackbox.com/Instrumentation/Dissolved-oxygen-meter-HI2400-02-