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Download RAW file: https://library.csbe-scgab.ca/docs/journal/37/37_2_113_raw.pdf
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Description: A conventional temperature-based fan controller was modified so that it could be used to modulate fan speed on the basis of relative humidity. The thermistor in the original controller was replaced with a field effect transistor (FET) whose gate terminal was connected to an analog output port of a computer data acquisition and control board. The same board was used to acquire relative humidity signals from a thin-fllm-polymer humidity sensor. Software was written to control humidity in a poultry house at set points of approximately 30% RH and 60% RH. The system provided good control at both levels although, because of the air inlet and heating system, control was not as good at the higher level.

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Citation: H. Hao and J.J. Leonard 1995. A RELATIVE HUMIDITY CONTROLLER FOR EXPERIMENTAL TURKEY HOUSING. Canadian Agricultural Engineering 37(2):113-117.
Volume: 37
Issue: 2
Pages -
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Date: 1995
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Type: Text.Article
Format: PDF
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Coverage: Canada
Language 1: en
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Rights: Canadian Society for Bioengineering
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