Thermocouple heads are commonly used in industries to measure temperatures of various substances and equipment. They are used in high-temperature environments, such as furnaces, reactors, and other industrial processes. The thermocouple head is a device that contains a thermocouple element and protects it from the environment.

Thermocouples work based on the See beck effect, which is a phenomenon where a temperature difference between two dissimilar metals generates an electrical potential. The amount of electrical potential generated is proportional to the temperature difference between the two metals. The thermocouple head is designed to ensure that the thermocouple element is in contact with the substance being measured while being protected from the surrounding environment.

Thermocouple heads come in different shapes and sizes, depending on the application. They are typically made of materials that can withstand high temperatures and harsh environments. Some common materials used to manufacture thermocouple heads include ceramic, aluminium, and stainless steel.