RTD Sensing Elements, Thermistors and Assemblies
Standard Accuracy Ceramic Wire Wound Platinum RTD Elements
High Accuracy Ceramic Wire Wound Platinum Pt100 Elements
Thin Film Platinum RTD Element (Pack of 5)
Individually Available Thin Film Platinum RTD Elements
Technical Learning
RTD vs Thermocouple
It is not practical to compare RTDs and thermocouples generally. However, if we compare their performance in terms of specific criteria, we can see which is best suited for specific applications. Thermocouples are best for working at high temperatures. New manufacturing techniques have improved the measurement range of RTD probes, but more than 90% of RTDs are designed for temperatures below 400°C.
In contrast, some thermocouples can be used at up to 2500°C. Thermocouples are generally cheaper than RTDs...
How is Temperature Measured?
Temperature can be measured via a diverse array of sensors. All of them infer temperature by sensing some change in a physical characteristic. Six types with which the engineer is likely to come into contact are: thermocouples, resistive temperature devices (RTDs and thermistors), infrared radiators, bimetallic devices, liquid expansion devices, and change-of-state devices.
Choose the right temperature measurement instrument for your application...