Principles and Applications of Ceramic Humidity Sensors

This paper presents a brief review of the state of the art in humidity and gas ceramic sensors R&D; it also describes the principle, fabrication and application of the humidity-sensitive Si-doped a-hematite (α-Fe2O3) sintered compacts. The humidity signal response is characterized by volt-ampero...

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Main Authors: Mario Pelino, Carlo Cantalini, Marco Faccio
Format: Article
Language:English
Published: Wiley 1994-01-01
Series:Active and Passive Electronic Components
Online Access:http://dx.doi.org/10.1155/1994/91016
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author Mario Pelino
Carlo Cantalini
Marco Faccio
author_facet Mario Pelino
Carlo Cantalini
Marco Faccio
author_sort Mario Pelino
collection DOAJ
description This paper presents a brief review of the state of the art in humidity and gas ceramic sensors R&D; it also describes the principle, fabrication and application of the humidity-sensitive Si-doped a-hematite (α-Fe2O3) sintered compacts. The humidity signal response is characterized by volt-amperometric and impedance spectroscopy techniques in the 0-97% relative humidity (RH) range. The response time of the sensor is evaluated by 0-60% RH variations. Experimental techniques used to measure the hysteresis, drift, and aging of the humidity setasor are presented and the results are discussed. The CO sensitivity is investigated by activating the sensor in the 350-450℃ temperature range. A humidity-meter prototype, based on the α-Fe2O3 ceramic compact is described, and its electronics and features are presented in this paper.
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institution Kabale University
issn 0882-7516
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publishDate 1994-01-01
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series Active and Passive Electronic Components
spelling doaj-art-97edc3b33aed48048774a44fc3d8ea7d2025-02-03T01:31:51ZengWileyActive and Passive Electronic Components0882-75161563-50311994-01-01162698710.1155/1994/91016Principles and Applications of Ceramic Humidity SensorsMario Pelino0Carlo Cantalini1Marco Faccio2Department of Chemistry, Chemical Engineering and Materials, Monteluco di Roio, L’Aquila 67040, ItalyDepartment of Chemistry, Chemical Engineering and Materials, Monteluco di Roio, L’Aquila 67040, ItalyDepartment of Electrical Engineering, Monteluco di Roio, L’Aquila 67040, ItalyThis paper presents a brief review of the state of the art in humidity and gas ceramic sensors R&D; it also describes the principle, fabrication and application of the humidity-sensitive Si-doped a-hematite (α-Fe2O3) sintered compacts. The humidity signal response is characterized by volt-amperometric and impedance spectroscopy techniques in the 0-97% relative humidity (RH) range. The response time of the sensor is evaluated by 0-60% RH variations. Experimental techniques used to measure the hysteresis, drift, and aging of the humidity setasor are presented and the results are discussed. The CO sensitivity is investigated by activating the sensor in the 350-450℃ temperature range. A humidity-meter prototype, based on the α-Fe2O3 ceramic compact is described, and its electronics and features are presented in this paper.http://dx.doi.org/10.1155/1994/91016
spellingShingle Mario Pelino
Carlo Cantalini
Marco Faccio
Principles and Applications of Ceramic Humidity Sensors
Active and Passive Electronic Components
title Principles and Applications of Ceramic Humidity Sensors
title_full Principles and Applications of Ceramic Humidity Sensors
title_fullStr Principles and Applications of Ceramic Humidity Sensors
title_full_unstemmed Principles and Applications of Ceramic Humidity Sensors
title_short Principles and Applications of Ceramic Humidity Sensors
title_sort principles and applications of ceramic humidity sensors
url http://dx.doi.org/10.1155/1994/91016
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AT carlocantalini principlesandapplicationsofceramichumiditysensors
AT marcofaccio principlesandapplicationsofceramichumiditysensors