Go Direct Optical Dissolved Oxygen contains a small lithium-ion battery. The system is designed to consume very little power and not put heavy demands on the battery. Although the battery is warranted for one year, the expected battery life should be several years. Replacement batteries are available from Vernier (order code: GDX-BAT-650).
Storage and Maintenance
When you have finished using Go Direct Optical Dissolved Oxygen, rinse it off with distilled water and blot it dry using a paper towel or lab wipe. Insert the probe back into the storage bottle containing the sponge, dampened with distilled water.
The tip of the probe is a replaceable screw-on cap called the Go Direct Optical Dissolved Oxygen Replacement Cap. This cap is warranted to be free from defects of a period of two years from the date of purchase; it is possible that you can get longer use than the warranty period. If you notice a reduced response, it is probably time to replace the cap (order code GDX-ODO-CAP). To extend the lifetime of the cap, do not expose it to direct sunlight for an extended period of time.
To store Go Direct Optical Dissolved Oxygen for extended periods of time, put the device in sleep mode by holding the button down for at least three seconds. The red LED will stop flashing to show that the unit is in sleep mode. Over several months, the battery will discharge but will not be damaged. After such storage, charge the device for a few hours, and the unit will be ready to go.
Exposing the battery to temperatures over 35°C (95°F) will reduce its lifespan. If possible, store the device in an area that is not exposed to temperature extremes.
This probe should be used in aqueous solutions only. Do not place the probe in viscous, organic liquids, such as heavy oils, glycerin (glycerol), ethylene glycol, or alcohols. Do not place the probe in acetone or non-polar solvents, such as pentane or hexane.
Go Direct Optical Dissolved Oxygen is designed so that the tip of the probe can be submerged in an aquatic environment for extended periods of time. For best results keep the pressure-sensing element out of water so as not to interfere with the active pressure compensation. This probe is not designed for long-term immersion applications.
The included micro USB cable is not waterproof.