Liquid thermometer

Universal thermometerIt is a temperature measurement tool suitable for various environments, with different accuracies and installation methods, and can meet general temperature monitoring needs. Its core function is to convert temperature changes into readable numerical values through physical or electronic principles, which are widely used in industrial, scientific research, medical, and daily life scenarios. The following introduces the technical principles, product classification, core features, and typical application scenarios:

1、 Technical principles

Universal thermometerDesign based on the physical properties of matter that change with temperature, common principles include:

1. thermal expansion and contractionLiquid (such as mercury, alcohol) or gas expands when heated and contracts when cooled, and the temperature value is directly displayed through a scale.

2. thermoelectric effectTwo different metals generate electromotive force when temperature changes, and the temperature is calculated by measuring the potential difference (such as a thermocouple thermometer).

3. resistance changeThe resistance value of metal or semiconductor changes with temperature and is displayed through circuit conversion (such as a thermal resistance thermometer).

4. infrared radiationCalculate surface temperature by measuring the infrared energy emitted by an object (such as an infrared thermometer).