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Laboratory testing of humidity sensors for use in animal environments
Authors: I. Erdebil and J.J. Leonard
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Download file: https://library.csbe-scgab.ca/docs/journal/34/34_3_267_ocr.pdf
Published in: CBE Journal » CBE Journal Volume 34 (1992)
Download RAW file: https://library.csbe-scgab.ca/docs/journal/34/34_3_267_raw.pdf
DOI:
Description: Apparatus was built to allow humidity sensors to be exposed to environments in which both humidity and pollutant levels could be controlled. Humidity levels were varied by pumping air through saturated salt solutions and the pollutants used were ammonia and poultry dust. The apparatus was used to test two thin-film polymer sensors and one aluminum oxide sensor. Tests were carried out using three ammonia concentrations and three dust levels in a random factorial design. Humidity levels were varied slowly between ap proximately 33% RH and 85% RH and sensor outputs were compared with those from a calibrated dew-point hygrometer. The response of sensors to step changes in humidity levels also was evaluated. The thin-film sensors were not affected by pollutants but responded more slowly than the aluminum oxide sensor. All the sensors tested displayed similar accuracy ratings of ?6 to ?7% RH.
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Citation: I. Erdebil and J.J. Leonard 1992. LABORATORY TESTING OF HUMIDITY SENSORS FOR USE IN ANIMAL ENVIRONMENTS. Canadian Agricultural Engineering 34(3):267-271.
Volume: 34
Issue: 2
Pages -
Contributor:
Date: 1992
Technical field:
Conference name:
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Type: Text.Article
Format: PDF
Publication type:
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Coverage: Canada
Language 1: en
Language 2:
Rights: Canadian Society for Bioengineering
Notes:
Other files:
DOI:
Description: Apparatus was built to allow humidity sensors to be exposed to environments in which both humidity and pollutant levels could be controlled. Humidity levels were varied by pumping air through saturated salt solutions and the pollutants used were ammonia and poultry dust. The apparatus was used to test two thin-film polymer sensors and one aluminum oxide sensor. Tests were carried out using three ammonia concentrations and three dust levels in a random factorial design. Humidity levels were varied slowly between ap proximately 33% RH and 85% RH and sensor outputs were compared with those from a calibrated dew-point hygrometer. The response of sensors to step changes in humidity levels also was evaluated. The thin-film sensors were not affected by pollutants but responded more slowly than the aluminum oxide sensor. All the sensors tested displayed similar accuracy ratings of ?6 to ?7% RH.
Keywords:
Résumé:
Mots-clés:
Citation: I. Erdebil and J.J. Leonard 1992. LABORATORY TESTING OF HUMIDITY SENSORS FOR USE IN ANIMAL ENVIRONMENTS. Canadian Agricultural Engineering 34(3):267-271.
Volume: 34
Issue: 2
Pages -
Contributor:
Date: 1992
Technical field:
Conference name:
Session name:
Other information:
Type: Text.Article
Format: PDF
Publication type:
Source:
Relation:
Coverage: Canada
Language 1: en
Language 2:
Rights: Canadian Society for Bioengineering
Notes:
Other files:
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