Measuring temperatures in an environment that humans aren't able to go in has always been a problem. With new technologies and new materials being produced other methods of measuring these temperatures was needed. This is where the thermocouple comes in. The most common of these is the Type K thermocouple.
Thermocouples are used in many industries, such as Power generation, oil and gas and even in everyday appliances such as stoves and toasters. No matter what industry it is a thermocouple will be used. Thermocouples are a sensor comprising of two legs made of different wire. One end of these wires are connected together to form a junction were the temperatures is measured from.
They require no external power to produce these voltages due to the thermal gradient the materials experience. Commercially they are not expensive and are easy produced. Accuracy of the measure meant is due to the materials being used to produce the couples and the instruments used to measure the changes in the voltages. The more expensive monitoring devices can compensate for the differences in that may occur.
Thermocouples are used in these harsh environments as they are cheap to produce and replace. They can reach very high temperatures unlike other conventional type of thermometers and are more durable and can be installed in almost any environment. They are often enclosed in a protective sheath to help protect it in extreme environments that could easily corrode it.
The wires used in these couples are made from noble metals which can react to heat changes very quickly. The k type couple is the most common of these because of their accuracy, reliability and wide temperate range. This couple is used very often in nuclear application due to its radiation hardness and it can with stand continuous temperatures of up to 2000 degrees Fahrenheit. These couples are not only used for extreme heat conditions, they can also be used for extremely cold conditions.
The voltage is produced when heat or cold is applied to a thermo conducting metal. This conductor is subjected to a thermal gradient which then produces a voltage. By adding a second thermal metal on the same end with a varying degree of thermal gradient the difference between these two voltages can be detected and calculated.
The diameter of the wires influences the response time of the joint. The smaller the wire the quicker the temperature can be measured, but a trade off on this is the temperature range it can handle. The thicker it is the more temperature in can handle but is very slow to respond to the changes.
The thermocouple of this sort is used most often as it is the most versatile and reliable of the various types. No matter what the application there will be a thermocouple that will suit the application. From furnaces to the house hold oven and even a simple electronic device, thermocouple is a part of everyday life.
Thermocouples are used in many industries, such as Power generation, oil and gas and even in everyday appliances such as stoves and toasters. No matter what industry it is a thermocouple will be used. Thermocouples are a sensor comprising of two legs made of different wire. One end of these wires are connected together to form a junction were the temperatures is measured from.
They require no external power to produce these voltages due to the thermal gradient the materials experience. Commercially they are not expensive and are easy produced. Accuracy of the measure meant is due to the materials being used to produce the couples and the instruments used to measure the changes in the voltages. The more expensive monitoring devices can compensate for the differences in that may occur.
Thermocouples are used in these harsh environments as they are cheap to produce and replace. They can reach very high temperatures unlike other conventional type of thermometers and are more durable and can be installed in almost any environment. They are often enclosed in a protective sheath to help protect it in extreme environments that could easily corrode it.
The wires used in these couples are made from noble metals which can react to heat changes very quickly. The k type couple is the most common of these because of their accuracy, reliability and wide temperate range. This couple is used very often in nuclear application due to its radiation hardness and it can with stand continuous temperatures of up to 2000 degrees Fahrenheit. These couples are not only used for extreme heat conditions, they can also be used for extremely cold conditions.
The voltage is produced when heat or cold is applied to a thermo conducting metal. This conductor is subjected to a thermal gradient which then produces a voltage. By adding a second thermal metal on the same end with a varying degree of thermal gradient the difference between these two voltages can be detected and calculated.
The diameter of the wires influences the response time of the joint. The smaller the wire the quicker the temperature can be measured, but a trade off on this is the temperature range it can handle. The thicker it is the more temperature in can handle but is very slow to respond to the changes.
The thermocouple of this sort is used most often as it is the most versatile and reliable of the various types. No matter what the application there will be a thermocouple that will suit the application. From furnaces to the house hold oven and even a simple electronic device, thermocouple is a part of everyday life.
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