空調用固体電解質型二酸化炭素センサの開発 [in Japanese] A Carbon Dioxide Gas Sensor Based on Solid Electrolyte for Air Quality Control [in Japanese]
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A CO<sub>2</sub> sensor was set up by using Na<sub>3</sub>Zr<sub>2</sub>Si<sub>2</sub>PO<sub>12</sub> (NASICON) as a solid electrolyte, Li<sub>2</sub>CO<sub>3</sub> as a carbonate phase. The EMF (Electromotive force) was linear to the logarithm of CO<sub>2</sub> concentration and hardly depended on interfering gases by using a zeolite filter. The Δ EMF (EMF<sub>Air</sub>-EMF<sub>Gas</sub>) was stable even after the test of unpowered exposure to a high humidity atmosphere. The CO<sub>2</sub> monitor in which the CO<sub>2</sub> concentration is calculated by the Δ EMF using a new renovating system of the standard EMF was developed as a monitor for air quality control. The output of the monitor indicated a good agreement with that of the usual NDIR analyzer at the field-test in the office.
- The Journal of the Institute of Electrical Engineers of Japan
The Journal of the Institute of Electrical Engineers of Japan 118(2), 119-124, 1998-02
The Institute of Electrical Engineers of Japan