How does a temperature and humidity meter work?
| Temperature and humidity meters use electrical changes to measure humidity. | |
| Both temperature and humidity affect the electrical resistance and/or capacitance of a circuit. Electrical resistance is related to how easily current can flow through a conductive material, while capacitance is related to how much charge a capacitor can store. |
 | This knowledge was used to develop thermometers and other similar devices such as temperature and humidity meters. |
 | Although the electrical changes are small, they can be measured to give reasonably accurate readings of temperature and humidity. |
 | The sensor of a temperature and humidity meter has an electrode that measures electrical resistance or capacitance and then sends a signal through a circuit where it is converted into a temperature or humidity reading. |
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