光電管式露点湿度計による極低湿度の測定

• 林 俊孝

  株式会社北辰電機製作所

• 風早 正宏

  株式会社北辰電機製作所

• 桜井 弘

  日本酸素株式会社

• 卯月 武助

  日本酸素株式会社

書誌事項

タイトル別名

• Electronic Dew-Point Hygrometer Applied in Low Humidity Measurement

抄録

The performance characteristics of an electronic dew-point hygrometer in a low humidity measurement are presented in some detail. <BR>The instrument consists of three parts, (1) a measuring chamber containing a cooled, polished metal mirror combined with a radio-frequency induction heater, (2) an electronic heating control servo-system to keep the mirror temperature at the dew-point of sample gas and (3) an indicator and/or recorder of the measured dew-point. The dew-point is measured automatically and continuously. I<BR>n a preliminary test at a certain atmospheric humidity of a room, the hygrometer had the precision of 0.2deg.C and very fast response. When applied in an extra-low humidity measure-ment, the instrument could make determination of water vapour of the dew-point -70°C and even in the dew-point range lower than -30°C, the precision of 1deg.C was attained with fast response.

収録刊行物

• 計測

  計測 6 (5), 216-219, 1956

  公益社団法人 計測自動制御学会

詳細情報

• CRID: 1390001205121635072
• NII論文ID: 130003765159
• DOI: 10.11499/sicejl1951.6.216
• ISSN: 18838154
• ISSN: 04500024
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可