Extech 407510 Data Logger, RS232

The FLIR Heavy Duty Dissolved Oxygen Meter is a versatile tool for measuring oxygen concentration and temperature in various applications. It also includes automatic temperature compensation, Min/Max/Average readings recall, and data hold function. Complete with a probe, membranes, rubber holster, battery, and hard case, this meter is a must-have for accurate measurements.

It has Fast 0.8 second sampling time for efficiency
Built-in RS-232 PC interface for data acquisition and logging
Data hold function for convenience
Optional software for displaying and capturing readings on a PC