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影響薄膜電容濕度傳感器的極性分子:Polar molecules, such as water, affect the capacitance of the sensor 極性分子 , 如水 , 影響傳感器的電容

• Other gases can also penetrate the polymer film, but their dielectric constant is negligible compared to water vapour (80 >> 2...3). 其他氣體也可以穿過聚合物薄膜 , 但是它們的電介質常數和水蒸汽 的電介質常數相比可以忽略不計 (80 >> 2...3) 。

• In normal conditions there are no notable amounts of other polar molecules in the air except water vapour, especially in areas where people work. 在通常條件下 , 在空氣 中除了水蒸汽外 , 沒有其他極性分子的影響需要考慮 , 特別是在人們工作 的區域。

Capacitance is measured with a high frequency 電容通 過高頻電路測試 • Resistive phenomena not significant 阻性信 號影響不大