3. The metallurgical industry. The metallurgical industry is the abbreviation of the smelting metal industry. Many people know that temperature in the metallurgical industry is a very important element, and the metallurgical industry has a big difference with other industries, that is, the temperature data touched by this industry is usually It is relatively high and the temperature range is very wide. The thermocouple's temperature range is between minus 40 degrees and minus 1600 degrees. This range is called the normal thermocouple. If it is a thermocouple made of special materials, the temperature range will be longer than this value range. More broadly, the thermocouple's temperature range can meet the needs of the metallurgical industry, and it is also widely used in the metallurgical industry. 

4. The pharmaceutical industry. The pharmaceutical industry is an industry that is closely related to everyone's daily life. Almost everyone has been exposed to medicine, but many people do not know that in the production process, temperature plays a vital role in pharmaceutical production. In the link, we must strictly control the temperature level and measure the temperature quickly and accurately. Because of the advantages of thermocouples in temperature measurement, it can meet the temperature requirements in pharmaceutical production. It is not surprising why many pharmaceutical industries will Thermocouples are widely used. 

These are the four industries in which thermocouples are often used. In addition to these industries, there are many other industries in which thermocouples can be applied, such as electronics, machinery, and heating plants. It can be said that it is necessary to constantly master the temperature of mechanical equipment. In the industry, thermocouples can work and get applied.