Pt100 has a resistance of 100 ohms at 0°C, while Pt1000 has 1000 ohms. Pt1000 is generally better for long cable runs as it reduces the relative impact of lead-wire resistance.
Temperature Sensors - RTD (Resistance Temperature Detector) Component Intelligence
Precision temperature sensing via platinum resistance elements.
What are Temperature Sensors - RTD (Resistance Temperature Detector) components?
RTDs (Resistance Temperature Detectors) use the predictable relationship between metal resistance and temperature to provide high-accuracy, linear sensing. They are preferred over thermocouples for stability and repeatability in precision industrial and laboratory environments.
How to Choose Temperature Sensors - RTD (Resistance Temperature Detector) Components
Selecting an RTD requires balancing precision, wiring complexity, and environmental robustness.
Element Type
Choose between Pt100, Pt500, or Pt1000 based on your required sensitivity and the input impedance of your signal conditioning circuit.
Wiring Configuration
Use 2-wire for simple, low-cost setups; 3-wire for standard industrial lead-wire compensation; 4-wire for maximum precision in laboratory settings.
Tolerance Class
Select DIN/IEC classes (e.g., Class A, B, or AA) to match your application's specific error budget and calibration requirements.
Operating Range
Ensure the sensor's material construction (thin-film vs. wire-wound) supports your target temperature extremes without degradation.
Packaging
Match the physical form factor—such as surface mount, probe, or glass-encapsulated—to your thermal coupling and mounting constraints.
Popular Temperature Sensors - RTD (Resistance Temperature Detector) Components
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