Resistance thermometer use metals that alter their electric resistance when heated.
Platinum is the most commonly used material for industrial RTD. However, Copper and Nickel are also used for some applications.
The resistance at 0°C is called R and it is an important 0. parameter to be defined. The most commonly used RTD element is Platinum with a resistance of 100 at 0°C. Thus named Pt 100.
Platinum RTDs are suitable for temperature ranges from -200 to 850°C. Normally, Industrial RTDs are used at a temperature range of up to 400°C.
| Type of T/C | Temp. Range(°C) | Standard |
|---|---|---|
| -200°C | 0.55°C | -1.3°C |
| -100°C | 0.35°C | 0.8°C |
| 0°C | 0.15°C | 0.3°C |
| 100°C | 0.35°C | 0.8°C |
| 200°C | 0.55°C | 1.3°C |
| 300°C | 0.75°C | 1.8°C |
| 400°C | 0.95°C | 2.3°C |
| 500°C | 1.15°C | 2.8°C |
| 600°C | 1.35°C | 3.3°C |
| 700°C | – | 3.8°C |
| 800°C | – | 4.3°C |
| 850°C | – | 4.6°C |
© 2023 omengineers – All Rights Reserved. Design & Develop by excellent media works
