What are the differences between thermocouples and bimetallic thermometers?

Bimetallic thermometer is actually very similar to thermocouple. Because of the difference in measuring temperature difference, it is more suitable for on-site detection at medium and low temperatures, and for measuring the temperature of liquid vapor and gas medium in the range of -80℃-+500℃ in various production processes.

Thermocouples are used for high temperatures in industry, and bimetallic thermometers are most suitable for low temperatures. The main component of bimetallic thermometer is a multi-layer metal sheet composed of two or more metal sheets stacked together. It works on the principle that two different metals expand to different degrees when the temperature changes. It is based on a bimetallic sheet wound into a ring-shaped bend. When one end is heated and expanded, it drives the pointer to rotate, and the working instrument displays the temperature value corresponding to the thermoelectric potential. The main component of industrial bimetallic thermometer is a multi-layer metal sheet composed of two or more metal sheets stacked together.
Bimetallic thermometers are still widely used in China and there are many similar products. Bimetallic thermometers have axial, radial, universal and other head models to choose from. The length of the bimetallic thermometer probe can be customized according to customer needs.

Widely used in industries such as petroleum, chemical, metallurgy, textile, and food. Bimetallic thermometer is a field detection instrument for measuring medium and low temperatures. It can directly measure the temperature of liquid, steam, and gas medium in the range of -80℃-+500℃ in various production processes. On-site temperature display is intuitive, convenient, safe, reliable, and has a long service life; the core-pulling thermometer can be maintained or replaced in a short time without stopping the machine. Axial, radial, 135o, universal and other varieties are complete, which can meet the needs of various on-site installations.