A High Temperature Capacitive Humidity Sensor Based on Mesoporous Silica
Capacitive sensors are the most commonly used devices for the detection of humidity because they are inexpensive and the detection mechanism is very specific for humidity. However, especially for industrial processes, there is a lack of dielectrics that are stable at high temperature (>200 °C...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2011-03-01
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| Series: | Sensors |
| Subjects: | |
| Online Access: | http://www.mdpi.com/1424-8220/11/3/3135/ |
| _version_ | 1798006597283217408 |
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| author | Michael Tiemann Jan Roggenbuck Sören Krotzky Claus-Dieter Kohl Tilman Sauerwald Alexander Weiß Thorsten Wagner |
| author_facet | Michael Tiemann Jan Roggenbuck Sören Krotzky Claus-Dieter Kohl Tilman Sauerwald Alexander Weiß Thorsten Wagner |
| author_sort | Michael Tiemann |
| collection | DOAJ |
| description | Capacitive sensors are the most commonly used devices for the detection of humidity because they are inexpensive and the detection mechanism is very specific for humidity. However, especially for industrial processes, there is a lack of dielectrics that are stable at high temperature (>200 °C) and under harsh conditions. We present a capacitive sensor based on mesoporous silica as the dielectric in a simple sensor design based on pressed silica pellets. Investigation of the structural stability of the porous silica under simulated operating conditions as well as the influence of the pellet production will be shown. Impedance measurements demonstrate the utility of the sensor at both low (90 °C) and high (up to 210 °C) operating temperatures. |
| first_indexed | 2024-04-11T12:57:10Z |
| format | Article |
| id | doaj.art-60ce0a92fc0d485585d8c0b0276ed2b6 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-04-11T12:57:10Z |
| publishDate | 2011-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-60ce0a92fc0d485585d8c0b0276ed2b62022-12-22T04:23:03ZengMDPI AGSensors1424-82202011-03-011133135314410.3390/s110303135A High Temperature Capacitive Humidity Sensor Based on Mesoporous SilicaMichael TiemannJan RoggenbuckSören KrotzkyClaus-Dieter KohlTilman SauerwaldAlexander WeißThorsten WagnerCapacitive sensors are the most commonly used devices for the detection of humidity because they are inexpensive and the detection mechanism is very specific for humidity. However, especially for industrial processes, there is a lack of dielectrics that are stable at high temperature (>200 °C) and under harsh conditions. We present a capacitive sensor based on mesoporous silica as the dielectric in a simple sensor design based on pressed silica pellets. Investigation of the structural stability of the porous silica under simulated operating conditions as well as the influence of the pellet production will be shown. Impedance measurements demonstrate the utility of the sensor at both low (90 °C) and high (up to 210 °C) operating temperatures.http://www.mdpi.com/1424-8220/11/3/3135/capacitive sensorhumidityhigh temperaturemesoporous silica |
| spellingShingle | Michael Tiemann Jan Roggenbuck Sören Krotzky Claus-Dieter Kohl Tilman Sauerwald Alexander Weiß Thorsten Wagner A High Temperature Capacitive Humidity Sensor Based on Mesoporous Silica Sensors capacitive sensor humidity high temperature mesoporous silica |
| title | A High Temperature Capacitive Humidity Sensor Based on Mesoporous Silica |
| title_full | A High Temperature Capacitive Humidity Sensor Based on Mesoporous Silica |
| title_fullStr | A High Temperature Capacitive Humidity Sensor Based on Mesoporous Silica |
| title_full_unstemmed | A High Temperature Capacitive Humidity Sensor Based on Mesoporous Silica |
| title_short | A High Temperature Capacitive Humidity Sensor Based on Mesoporous Silica |
| title_sort | high temperature capacitive humidity sensor based on mesoporous silica |
| topic | capacitive sensor humidity high temperature mesoporous silica |
| url | http://www.mdpi.com/1424-8220/11/3/3135/ |
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