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A Simple Method to Minimize Humidity Measurement Error in Psychrometers

Author

Listed:
  • John W. B. de Araújo

    (Department Física, Universidade Federal do Paraná,Curitiba 80035-050, PR, Brazil)

  • Daniel F. C. Ferrando

    (Campus Bagé, Universidade Federal do Pampa, Bagé 96400-590, RS, Brazil)

  • Fabricio Ferrari

    (IMEF, Universidade Federal do Rio Grande, Rio Grande 96201-900, RS, Brazil)

  • Pedro A. B. Kuroda

    (Latino-Americano de Ciências da Vida e da Natureza (ILACVN), Universidade Federal da Integração Latino-Americana (UNILA), Foz do Iguaçu 85870-650, PR, Brazil)

  • Edson M. Kakuno

    (Latino-Americano de Ciências da Vida e da Natureza (ILACVN), Universidade Federal da Integração Latino-Americana (UNILA), Foz do Iguaçu 85870-650, PR, Brazil)

Abstract

This work demonstrates that simple calibration procedures can reduce the errors in determining relative humidity with a psychrometer by up to 75 times. The psychrometer uses two temperature transducers to measure relative humidity. The calibration consists of comparing both transducers before assembling the psychrometer. A psychrometer assembly is presented, built from readily available parts, which provides temperature data for comparison with a theoretical model. The results are compared against a reference psychrometer to assess errors with and without calibration. A twenty-two-fold decrease in error was observed for a relative humidity of 62%.

Suggested Citation

  • John W. B. de Araújo & Daniel F. C. Ferrando & Fabricio Ferrari & Pedro A. B. Kuroda & Edson M. Kakuno, 2026. "A Simple Method to Minimize Humidity Measurement Error in Psychrometers," J, MDPI, vol. 9(1), pages 1-12, February.
    • Handle: RePEc:gam:jjopen:v:9:y:2026:i:1:p:7-:d:1866836
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