Ambient Temperature Compensation of Thin Film Pirani Vacuum Sensor

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A thin film Pirani vacuum sensor having a single microheater and two diode-thermistors (Th-A and Th-B) composed of pn junction diodes on the micro-air-bridge (MAB) is fabricated by micromachining technologies. A method to eliminate the ambient temperature effects based on double pulse-heating (pulse duration: 125ms) up to two different temperatures, <i>T<sub>h</sub></i> and <i>T<sub>l</sub></i>, above the room temperature in vacuum sensing is proposed. Pulse-heating has also a merit to prevent temperature increase of the sensor chip. It is demonstrated that the Pirani gauge with a cantilever type MAB structure can almost compensate the ambient temperature effects by double pulse-heating. A method to correct the errors due to the non-linearity in the I-T relationship of the diode-thermistor as a very sensitive temperature sensor is also described.

収録刊行物

  • 電気学会論文誌. E, センサ・マイクロマシン準部門誌 = The transactions of the Institute of Electrical Engineers of Japan. A publication of Sensors and Micromachines Society  

    電気学会論文誌. E, センサ・マイクロマシン準部門誌 = The transactions of the Institute of Electrical Engineers of Japan. A publication of Sensors and Micromachines Society 127(3), 136-139, 2007-03-01 

    The Institute of Electrical Engineers of Japan

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各種コード

  • NII論文ID(NAID)
    10018737759
  • NII書誌ID(NCID)
    AN1052634X
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    13418939
  • NDL 記事登録ID
    8728690
  • NDL 雑誌分類
    ZN31(科学技術--電気工学・電気機械工業)
  • NDL 請求記号
    Z16-B380
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
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