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Member #218475

Member Since: April 14, 2011

Country: United States

  • Hi all,
    Last week I bought a Arduino Duemilanove board and a SHT 15 breakout from Sparkfun.
    I use the practicalarduino / SHT1x code from Github written by Jonathan Oxor (June 16, 2009).
    At my job (I work on a technical laboratory) I placed the SHT15 sensor together with another commercial
    temperature / humidity sensor above a hermetic closed saturated sodium chloride solution.
    The theoretical value of the humidity of the saturated sodium chloride solution at 20 °C is 75,5%.
    I measure with the commercial temperature / humidity sensor above the saturated sodium chloride solution an temperature 21,2°C and 75,0% humidity.
    With the SHT15 breakout I measure above the saturated sodium chloride solution an temperature 21,3°C and 47,5% humidity!
    Before the measurements I conditioned the SHT15 breakout 20 hour with >75% humidity.
    What happens?
    Who can help me?
    Jack
    The Netherlands

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