2015 年 58 巻 4 号 p. 155-161
This second lecture of “Basics of Vacuum measurement from viewpoint of Metrology” gives the concise explanation of the technical terms related to the pressure measurement such as a zero point, an offset, a residual current, a linearity, and so on. A calibration result of a hot-cathode ionization gauge is shown as an example. A difference between a calibration and an adjustment is also explained. Benefits of calibration are discussed.