RTD stands for resistance temperature detector, and is a type of thermometer that makes use of RTD elements in order to perform their function in heat detection. Such elements are usually made up of a thin wire that is tightly coiled around its glass or ceramic middle. They also require protection, as they are quite delicate, and are therefore often found within the sheathed RTD probe.
These types of thermometers are becoming increasingly popular in industrial settings where temperatures of below 600 degrees Celsius need to be determined. They are even becoming more frequently used than thermocouples because they have been deemed as more accurate. Another of their advantages is that they can be used repeatedly. Since that the element is of a pure material nature, for example, nickel, platinum or copper, its resistance changes predictably whenever there is a fluctuation in temperature.
The resistance thermometer is considered as very reliable and stable. It requires a power source in order to work, and makes use of electrical opposition. The Seebeck effect of the thermocouple allows it to generate voltage. There are therefore some obvious differences between the two types of thermometers. When talking of resistance, it is ideal if it can compare closely (linearly) to the temperatures that are shown by the Callendar Van-Dusen formula.
It is important to note that the stability of a platinum detecting wire is dependent upon its degree of contamination. It should be quite capable of reasonable resistance to vibrations, and should not be expandable to a degree that affects its functionality. It should be protected from other strains as well. It is common to find elements of iron and copper, and commercial platinum grades can be made that have a certain temperature resistance. Sensors often have a resistance around 100 at zero degrees Celsius.
Very often, you will find that RTDs are made from platinum, nickel, copper, tungsten and balco. While tungsten and balco are rarely used, platinum is considered as most accurate and common. The device should be used according to the manufacturer's recommendations, otherwise it may not provide accurate results due to resistive heating caused by the small current passing through it. Its results can be inaccurate due to mechanical strain as well.
People do consider RTDs to be reliable temperature sensors. They are also stable and can be used often, and these aspects are further advantages of these types of thermometers. It is also often found that they conform to the DIN-IEC Class B.
Electrical noise does not affect the accuracy of RTDs, and they can therefore be used around industrial equipment. They are also very small, which can be a useful aspect. The simplest RTDs found are the RTD elements, which have ceramic or glass centers.
Another element is the element on the surface which is useful for determining the temperature of flat surfaces. This is because it is made as thinly as possible. An RTD probe is different, and is an element constructed within a metallic tube, or sheath. The sheath is important because it safeguards the element from environmental hazards. It's the most rugged category of RTDs.
These types of thermometers are becoming increasingly popular in industrial settings where temperatures of below 600 degrees Celsius need to be determined. They are even becoming more frequently used than thermocouples because they have been deemed as more accurate. Another of their advantages is that they can be used repeatedly. Since that the element is of a pure material nature, for example, nickel, platinum or copper, its resistance changes predictably whenever there is a fluctuation in temperature.
The resistance thermometer is considered as very reliable and stable. It requires a power source in order to work, and makes use of electrical opposition. The Seebeck effect of the thermocouple allows it to generate voltage. There are therefore some obvious differences between the two types of thermometers. When talking of resistance, it is ideal if it can compare closely (linearly) to the temperatures that are shown by the Callendar Van-Dusen formula.
It is important to note that the stability of a platinum detecting wire is dependent upon its degree of contamination. It should be quite capable of reasonable resistance to vibrations, and should not be expandable to a degree that affects its functionality. It should be protected from other strains as well. It is common to find elements of iron and copper, and commercial platinum grades can be made that have a certain temperature resistance. Sensors often have a resistance around 100 at zero degrees Celsius.
Very often, you will find that RTDs are made from platinum, nickel, copper, tungsten and balco. While tungsten and balco are rarely used, platinum is considered as most accurate and common. The device should be used according to the manufacturer's recommendations, otherwise it may not provide accurate results due to resistive heating caused by the small current passing through it. Its results can be inaccurate due to mechanical strain as well.
People do consider RTDs to be reliable temperature sensors. They are also stable and can be used often, and these aspects are further advantages of these types of thermometers. It is also often found that they conform to the DIN-IEC Class B.
Electrical noise does not affect the accuracy of RTDs, and they can therefore be used around industrial equipment. They are also very small, which can be a useful aspect. The simplest RTDs found are the RTD elements, which have ceramic or glass centers.
Another element is the element on the surface which is useful for determining the temperature of flat surfaces. This is because it is made as thinly as possible. An RTD probe is different, and is an element constructed within a metallic tube, or sheath. The sheath is important because it safeguards the element from environmental hazards. It's the most rugged category of RTDs.
About the Author:
Read more about Important Things To Consider About An RTD Probe visiting our website.
No comments:
Post a Comment