How does one measure temperatures that are too hot for humans to be near? A traditional thermometer would be used for temperatures of around 200 degrees Fahrenheit and would destroy them if exposed to anything higher. Electronic thermometers can handle heat inside a computer but not a furnace at over 2000 degrees. The only option would be to use a type K thermocouple.
When the conductors are exposed to heat or cold they produce a voltage. This voltage difference between the two conductors can be used to determine the temperature. The materials used to produce these conductors have a predictable and repeatable voltage gain or drop according to temperatures they are exposed to.
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.
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.
Some couples are designed to only be used in dry environments and thus any moisture can render the accuracy of the devices useless. There are limitations on the accuracy of the measurement as it gets closer to values of less than one degree Celsius. Thus it is difficult to measure accurately at these values. More sensitive monitoring devices would be required below this value.
Type K is the most common general purpose couple. It has a more average sensitivity compared to other types and is inexpensive to produce. It is used in a relatively wide variety of probes and can measure from extreme negative temperatures to extremely high temperatures. One of the conducting materials used in this type of conductor is magnetic and can be susceptible to deviation I n the output voltage.
These metals have predictable and repeatable values between temperature and voltage. Thus means that for different environments the correct type of conductor can be determined. These couples can age over time when exposed to extremely harsh environments. Due to them being cheaply produced they can easily be replace at little cost to the user.
Thermocouples have made a large impact on the steel production industry. By adding various metals into a mixture at varying temperatures new alloys can be created. The only way to check if the correct temperature has been reached before adding the next metal is through the use of these couples. The thermocouple itself will be the most likely one to be used for this application.
When the conductors are exposed to heat or cold they produce a voltage. This voltage difference between the two conductors can be used to determine the temperature. The materials used to produce these conductors have a predictable and repeatable voltage gain or drop according to temperatures they are exposed to.
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.
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.
Some couples are designed to only be used in dry environments and thus any moisture can render the accuracy of the devices useless. There are limitations on the accuracy of the measurement as it gets closer to values of less than one degree Celsius. Thus it is difficult to measure accurately at these values. More sensitive monitoring devices would be required below this value.
Type K is the most common general purpose couple. It has a more average sensitivity compared to other types and is inexpensive to produce. It is used in a relatively wide variety of probes and can measure from extreme negative temperatures to extremely high temperatures. One of the conducting materials used in this type of conductor is magnetic and can be susceptible to deviation I n the output voltage.
These metals have predictable and repeatable values between temperature and voltage. Thus means that for different environments the correct type of conductor can be determined. These couples can age over time when exposed to extremely harsh environments. Due to them being cheaply produced they can easily be replace at little cost to the user.
Thermocouples have made a large impact on the steel production industry. By adding various metals into a mixture at varying temperatures new alloys can be created. The only way to check if the correct temperature has been reached before adding the next metal is through the use of these couples. The thermocouple itself will be the most likely one to be used for this application.
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