Two Barographs of the Author's Design with High Sensitivity

[摘要] In order to supply the sensitive barograph for general use, two types were newly designed and tested by the author. The one is the statoscope type of Richard and a spiral bimetall is used as the compensator for the influence of temperature as shown in Fig. 3 The other is the same type as the usual barograph (Fig. 1), but has three aneroid boxes. The former is less satisfactory than the latter, for the recording pen is unstable owing to the flexibitlity of the highly, sensityive thin bimetall. The latter is more handy, and shows good results. The magnifying power is ten times (the pressure difference of 1mm Hg corresponds to 10mm on the recording paper) and the thermal error can easily be removed by the use of ordinary bimetalls.

[学科分类] 大气科学