保养套件（薄膜盖和含校准数据的 micro SD 卡）

The service set for the optical oxygen sensor type Oxi L 400 contains a long-life membrane head and a SD card with calibration data as well as a software package for data processing. The calibration data are specifically aligned to the respective luminophore covered membrane. A serial number on both SD card and membrane head helps to check for conformity.