What kind of indoor temperature and hygrometer is more accurate?
There are three kinds of temperature and humidity meters commonly used: 1.the electronic temperature and humidity meter determines the humidity according to the electrical conductivity of the humidity sensitive resistor or humidity sensitive capacitor at different humidity. 2. mercury or alcohol thermometer , the humidity is measured by a thermometer with double glass tubes, one of which has a volatilizer at the bottom, which should be provided with water during normal use to keep the evaporator moist. This kind of error is still very small, and the price is very cheap. 3. the dial thermometer works on the principle that two different metals have different degrees of expansion when the temperature changes. Generally speaking, the electronic one is more accurate than that of the dial. The electronic household temperature and humidity meters all use thermal resistors and humidity resistors. The household-level temperature and humidity meters have an ac...