Thermometers are pretty neat things that tell us how hot or cold something is. In most cases, they can measure temperatures. But what if I told you that there are thermometers designed to measure in super hot and freezing cold places, called "k type thermocouples"? This article takes a further look at these unique sensors and where/how this technology works.
One of the most exciting temperature sensors that are definitely out of the ordinary is a thermocouple — these are two different metals wired together. These metals are fastened at one end. They react and create an electric current when heat is applied to the metals. The current can be quantified and this value is referred to as the thermocouple "output."
There are different types of thermocouples made by joining different metals to form a junction. That's because some types are better at measuring high temperatures, like those created inside of furnaces or engines, while others can best be used for low temperatures seen in refrigerators or freezers. The capability of measuring such a broad range of temperatures makes this type of temperature sensor extremely significant in multiple fields.
Once you find the right sensor, you have to install it correctly for it to function properly. The sensor is located in the area that needs to be checked, such as inside an oven, furnace or for use in a scientific experiment. Another essential consideration is to shield the wiring between the sensor and the measuring equipment. In other words, you need to protect them from the additional heat or cold that would affect the readings and make them less accurate.
Also calibration is another significant process. Calibration: this means taking the readings of the sensor and comparing them to a known source such as ice or boiling water. When the readings do not appear to be the same, then there can be adjustments that can make it work accurately. Frequent calibration ensures the sensor will not lose reliability over time.
In most cases they can give us the temperature with higher precision, however sometimes there are problems that affect their performance. The first of these common problems includes damage to either the sensor itself or to its wiring. These readings can be incorrect due to damage, which in extreme cases, might even cause the sensor to stop working entirely. This is why it is necessary to inspect the sensor frequently for any signs of wear and stain.
Thermocouple temperature sensors also play an important role in the manufacturing industry as they help ensure that machines operates at the proper temperatures. This is important because if machines work at very high temperatures or low spaces, it can harm them and create subpar products.
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