A thermocouple is an electric device that is used to monitor and regulate temperature. There are several thermocouple types. They consist of two different metal conductors that produce voltage at the point where the conductors are joined. They are greatly used in science and industrial applications like measuring temperature or to convert temperature gradient for electricity for kilns, diesel engines, gas turbine exhaust and other industrial processes. Different thermocouples types are used in industries due to their wide temperature range which allows them to be used at high temperatures where most temperature gauges cannot be used.
In refrigerators where the components have to be cooled immediately, they can be used to transform heat energy to electrical energy preventing them from over heating. They are also used in producing energy and creating a very sensitive thermometer whose electric resistance varies with temperature and which is adapted to the study of the infrared spectra.
Thermocouples are grouped into different classes. Those whose metal conductors have platinum which is known to be rare metals are known as the crust of the upper class. This class is divided further into smaller classes. Thermocouples that have conductors which are fabricated using platinum and the other made of platinum rhodium alloy are type R and type S. For temperatures that varies from 1600 to 2640 degrees Fahrenheit type R thermocouples are used while type S thermocouples are applied in higher temperature between 1800 to 2640 degrees Fahrenheit.
Type B is another thermocouple in the upper crust class. One of the conductors has 6 percent rhodium alloy and 94 percent platinum while the other conductor has 30 percent rhodium alloy and 70 percent platinum. This thermocouple is used in temperature that range between 2500 and 3100 degrees Fahrenheit. This class of thermocouple is considered to be more stable and less sensitive.
The Home Body Class thermocouples transmit electricity using non rare materials. The C, E, J and K classes are the subcategories in the Home Body Class . Where in kind C one conductor has 74 % tungsten and 26 % rhenium the other having 95 % tungsten and 5 % rhenium.
Conduction in the Rarefied Class thermocouples uses refractory materials. These materials are highly immune to wear and extreme heat creating rarefied thermocouples. For this reason, they are very useful mostly in atomic energy plants.
Another class that is more specific in nature is known as the Exotic class thermocouples. Research institutions and universities use them for advanced experiments because specific amounts of rare metals are used for specific applications. Great care should be taken and maintenance done when using different thermocouples as they are made of two dissimilar metals making them corrosive which can lead to temperature misleading. The transducers should be correctly calibrated.
Thermocouples are complex in nature hence many errors can occur because operating them is not very easy. It has two dissimilar metals that record two different voltage levels due to temperature change at both ends of the metal. Marginal errors occur depending on the thermocouple types used because various types of electronic compensation are used at the cold junction.
In refrigerators where the components have to be cooled immediately, they can be used to transform heat energy to electrical energy preventing them from over heating. They are also used in producing energy and creating a very sensitive thermometer whose electric resistance varies with temperature and which is adapted to the study of the infrared spectra.
Thermocouples are grouped into different classes. Those whose metal conductors have platinum which is known to be rare metals are known as the crust of the upper class. This class is divided further into smaller classes. Thermocouples that have conductors which are fabricated using platinum and the other made of platinum rhodium alloy are type R and type S. For temperatures that varies from 1600 to 2640 degrees Fahrenheit type R thermocouples are used while type S thermocouples are applied in higher temperature between 1800 to 2640 degrees Fahrenheit.
Type B is another thermocouple in the upper crust class. One of the conductors has 6 percent rhodium alloy and 94 percent platinum while the other conductor has 30 percent rhodium alloy and 70 percent platinum. This thermocouple is used in temperature that range between 2500 and 3100 degrees Fahrenheit. This class of thermocouple is considered to be more stable and less sensitive.
The Home Body Class thermocouples transmit electricity using non rare materials. The C, E, J and K classes are the subcategories in the Home Body Class . Where in kind C one conductor has 74 % tungsten and 26 % rhenium the other having 95 % tungsten and 5 % rhenium.
Conduction in the Rarefied Class thermocouples uses refractory materials. These materials are highly immune to wear and extreme heat creating rarefied thermocouples. For this reason, they are very useful mostly in atomic energy plants.
Another class that is more specific in nature is known as the Exotic class thermocouples. Research institutions and universities use them for advanced experiments because specific amounts of rare metals are used for specific applications. Great care should be taken and maintenance done when using different thermocouples as they are made of two dissimilar metals making them corrosive which can lead to temperature misleading. The transducers should be correctly calibrated.
Thermocouples are complex in nature hence many errors can occur because operating them is not very easy. It has two dissimilar metals that record two different voltage levels due to temperature change at both ends of the metal. Marginal errors occur depending on the thermocouple types used because various types of electronic compensation are used at the cold junction.
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