07/12/2023
RTD or Thermocouple Temperature Sensors for Industrial Applications
When selecting a temperature sensor, it's important to consider two types: RTDs and thermocouples. Your decision should be based on the specific needs of your application. Each sensor has its own strengths and weaknesses that are dependent on the application's conditions.
In general, RTDs are more accurate, stable, and linear within a temperature range up to 600°C (1112°F). They're best suited for applications requiring higher accuracy, stability, and repeatability in lower temperature ranges.
On the other hand, thermocouples are more cost-effective, but less accurate and stable, and may experience drift over time. However, they have a faster temperature response, are more durable, and can withstand harsher conditions, such as vibration, and temperatures exceeding 2000°C (3632°F), depending on the type of thermocouple.
When it comes to industrial applications, which one is the better option? Thermocouples are less expensive and more resilient compared to RTDs, but RTDs are known for being more stable. From my observations, thermocouples seem to be more commonly used in industrial applications.
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