The RIKEN KEIKI OS-B11 Oxygen Sensor is a replacement electrochemical sensor designed for use with RIKEN KEIKI GD series gas detectors (GD-F3A, F3A-SC, F44, F4A, F4A-SC, F8D). It is used to measure oxygen concentration in various applications, including marine and industrial environments. The sensor has a 12-month service life once activated and must be stored in a cool, dark place below 20°C before use, as indicated by the manufacturing date on the label.
