harsh077 said:is it possible that instead of heating the junction ... of thermocouple...
we supply the current n the juntion cools down...
which when touched felt cold...
according to the supply of current...??
if not then is there any method of doing that
A cool thermocouple junction is a type of thermocouple that is designed to measure low temperatures. It consists of two dissimilar metal wires that are joined together at one end, known as the junction. When there is a difference in temperature between the two ends of the wires, it creates a voltage that can be measured and used to determine the temperature.
A cool thermocouple junction works based on the Seebeck effect, which states that when two different metals are joined together at a junction, a voltage is created when there is a difference in temperature between the two ends of the wires. This voltage can then be measured and used to determine the temperature at the junction.
One advantage of using a cool thermocouple junction is its ability to accurately measure low temperatures, even below 0°C. It is also durable and can withstand harsh environments, making it suitable for use in a variety of settings. Additionally, it has a fast response time, allowing for real-time temperature measurement.
Cool thermocouple junctions are commonly used in scientific and industrial settings to measure and monitor low temperatures. They are also used in refrigeration, cryogenics, and other low-temperature processes. Additionally, they can be found in medical equipment, such as freezers and incubators, to ensure accurate temperature control.
The accuracy of a cool thermocouple junction depends on various factors, such as the type of metals used, the temperature range, and the calibration of the instrument. However, in general, they have a high level of accuracy and can provide precise temperature measurements within a few degrees of the actual temperature.