BME680 as temperature increases, pressure decreases

[Kshirley_27]

I want to analyze when a door room is opened and closed. The BME680 temperature increase causes pressure to decrease which is opposed to increasing in pressure with an increase in temperature. Am I missing something out?

[FAE_CA1]

Hi,

Thanks for your inquiry.

What you observed is correct. The following is from the link at https://www.enotes.com/homework-help/what-relationship-between-air-temperature-air-162931.

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Pressure and temperature are related to each other by Gay-Lussac's Law. This law says that P1T1=P2T2, or the initial pressure multiplied by the initial temperature is equal to the product of the final temperature and the final pressure. Pressure and temperature have an inverse relationship. In other words, increasing one, will cause the other to decrease.

So if you increase the air temperature, the pressure is going to decrease. If you decrease the air temperature the pressure is going to increase.

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Thanks.