Digital thermocouple thermometers measure the temperature of air, liquids, or surfaces. They may measure temperature in Celsius, Fahrenheit, or both. Thermocouple thermometers are composed of two conductors of different metals, usually alloys of the same metal, which touch at the sensor end of the thermometer. The difference in conductivity between the two metal pieces produces a voltage flow between the sensor end and the open end of each conductor, which can be used to determine the temperature. Different alloys are used for different temperature ranges. Thermocouple thermometers are used in applications that require a large temperature range and do not require a high degree of accuracy. These thermometers are used in kilns, turbine exhaust systems, and furnaces.
Thermco Products, Inc. manufactures test and measurement equipment such as thermometers, hydrometers, anemometers, and data loggers. The company, founded in 2007 and headquartered in Lafayette, NJ, meets International Organization for Standardization (ISO) and International Electrotechnical Commission standard ISO/IEC 17025:2005.