When you talk about temperature, you may also talk about heat together. However, temperature and heat are different. While temperature is a measure of the warmth and coolness of an object, heat is the energy stored in the object. Heat is exchanged between objects, and the result is called temperature. The heat and temperature are discussed in this section.
Temperature is a measure of the warmth and coolness of an object. It is a numerical representation of the state of thermal energy. There are several types of expressions (units) for the temperature, but we will introduce some typical ones.
Temperature measurement means that the temperature of the product is detected by some means and the person recognizes the temperature. Objects to be measured differ depending on the state of the solid, liquid, gas, etc. In general, a “thermometer” is used to measure temperature, but in the industry, a contact-type thermometer (thermocouple, RTD, etc.) and a non-contact-type thermometer (radiation thermometer, etc.) are mainly used.