The Humidity Sensor Using the Polyacrylic Emulsion Containing Magnesium Chloride

稀有金属材料与工程, 2006, 35(z2): 369-371.

Ching-Han Yu ^1, , Jung-Chuan Chou ^2, , Tai-Ping Sun ^3, , Shen-Kan Hsiung ^4,

1.Institute of Electronic Engineering, Chung Yuan Christian University, Chung-Li, Taiwan 320, China

2.Graduate School of Electronic Engineering, National Yunlin University of Science and Technology, Douliou, Taiwan 640, China

3.Department of Electrical Engineering, National Chi Nan University, Nantou, Taiwan 545, China

4.Institute of Electronic Engineering, Chung Yuan Christian University, Chung-Li, Taiwan 320, China

基金项目: This study was supported by National Science Council, The NSC 93-2213-E-033-010, NSC 94-2213-E-033-005 and the authors wish to thank Polytronics Technology Corporation for the kind help

The Humidity Sensor Using the Polyacrylic Emulsion Containing Magnesium Chloride

Keywords： humidity sensor

An impedance type humidity sensor based on the polyacrylic emulsion containing magnesium chloride (MgCl2)without chemical modification was investigated. The impedances of the sensor were measured from various relative humidity in the frequency range between 0.1kHz and 100 kHz. The sensor has a good sensitivity from 60%RH to 90%RH. According to the experimental results, the response time is about 240 seconds in the adsorption process and 310 seconds in the desorption process.

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The Humidity Sensor Using the Polyacrylic Emulsion Containing Magnesium Chloride

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