Why Temperature and Humidity Readings Often Disagree With Comfort
A temperature and humidity sensor looks like it should directly describe the room: 25°C, 55% RH, comfortable or not.
That is too simple.
The sensor measures the local air around itself. The reading may not represent the whole room, the air outside the enclosure, or how a person feels.
The first model is: a temperature and humidity sensor measures the temperature and water-vapor state of air near the sensing element. Enclosure, airflow, self-heating, response time, and contamination decide whether that local air represents the environment you care about.
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