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.
The sensors have been specially developed to with stand extremely harsh environments. Whether it's probing a blob of lava or drilling a whole a mile under the ice, thermocouples are the work horse in the temperature measuring department. Developed using two different types of thermo conducting wire with two ends joined together to create a joint. They produce a voltage as the temperature rises or falls.
By referencing the change in voltage produced by these wires the temperature can be determined. There are factors that can affect the performance of these wires, such as diameter the environment it will be put in and also if it needs to be shielded from corrosive elements. Shielding will need to be taken into account when measuring the changes in voltage as the conductors are not exposed directly to the elements. Luckily the monitoring device can compensate for this.
A wide range of temperatures can be measured using these devices and some factors can influence the measurement. One of these is the environment they are to be used in. If it is a chemically harsh atmosphere the couple can erode and the life span of it can be drastically reduced. By shielding it by means of a sheath it can be protected and thus its life span extended.
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.
The sensors have been specially developed to with stand extremely harsh environments. Whether it's probing a blob of lava or drilling a whole a mile under the ice, thermocouples are the work horse in the temperature measuring department. Developed using two different types of thermo conducting wire with two ends joined together to create a joint. They produce a voltage as the temperature rises or falls.
By referencing the change in voltage produced by these wires the temperature can be determined. There are factors that can affect the performance of these wires, such as diameter the environment it will be put in and also if it needs to be shielded from corrosive elements. Shielding will need to be taken into account when measuring the changes in voltage as the conductors are not exposed directly to the elements. Luckily the monitoring device can compensate for this.
A wide range of temperatures can be measured using these devices and some factors can influence the measurement. One of these is the environment they are to be used in. If it is a chemically harsh atmosphere the couple can erode and the life span of it can be drastically reduced. By shielding it by means of a sheath it can be protected and thus its life span extended.
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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