RTD Resistance Temperature Detector Working principle. Resistance Temperature Sensors. RTD Animation
Resistance Temperature Detectors work by utilizing a resistive element. When a current passes through this element, the resistance can be measured and converted to a temperature reading based off the known resistive properties of the metal used in the RTD's construction.
What is an RTD?
RTD stands for Resistance Temperature Detector
RTD’s use a specific type of metal that, depending on the resistance measured in that metal, can determine its temperature
The actual measurement occurs at the element
There are many different types of RTD elements:
Thin-Film Element
Wire wound element
Coiled Element
and many others
How do they work?
It is based on the correlation between metal temperature and resistance
As the temperature of a metal increases, the resistance of metals to the flow of electricity increases
Each metal has a certain resistance measurement at different temperatures
Based on the resistance that is measured in a given type of metal, we can determine what the temperature is
The most common metals used RTD’s are platinum, nickel or copper.
Advantages and Disadvantages of an RTD?
They can provide a very high level of accuracy
Have a very wide operating range
Because of there high accuracy level, they are often used in situations where temperature measurement is critical
Rarely used at temperatures above 660C
At lower temperatures, RTD’s do not provide the same level of accuracy
RTD Resistance Temperature Detector Working principle. Resistance Temperature Sensors. RTD Animation
Resistance Temperature Detectors work by utilizing a resistive element. When a current passes through this element, the resistance can be measured and converted to a temperature reading based off the known resistive properties of the metal used in the RTD's construction.
What is an RTD?
RTD stands for Resistance Temperature Detector
RTD’s use a specific type of metal that, depending on the resistance measured in that metal, can determine its temperature
The actual measurement occurs at the element
There are many different types of RTD elements:
Thin-Film Element
Wire wound element
Coiled Element
and many others
How do they work?
It is based on the correlation between metal temperature and resistance
As the temperature of a metal increases, the resistance of metals to the flow of electricity increases
Each metal has a certain resistance measurement at different temperatures
Based on the resistance that is measured in a given type of metal, we can determine what the temperature is
The most common metals used RTD’s are platinum, nickel or copper.
Advantages and Disadvantages of an RTD?
They can provide a very high level of accuracy
Have a very wide operating range
Because of there high accuracy level, they are often used in situations where temperature measurement is critical
Rarely used at temperatures above 660C
At lower temperatures, RTD’s do not provide the same level of accuracy
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