PT100 B-class 0.3 Precision Temperature Sensor 4x30mm Stainless Steel Probe w/ 0.5m Cable

This sensor uses a 4-wire configuration, which is the most accurate method for RTD measurement. It uses two wires to supply a constant current to the sensor and two separate wires to measure the voltage drop across it, effectively eliminating errors caused by the resistance of the lead wires themselves. This is essential for high-precision applications over longer cable runs.

The platinum sensing element and SUS304 stainless steel probe are rated for continuous operation from -50°C to +200°C. The FEP-insulated and shielded cable is waterproof and resistant to many chemicals, making the sensor suitable for immersion in liquids, exposure to industrial atmospheres, and use in environments with vibration. Do not exceed the specified temperature range to avoid permanent damage.

You will need a compatible RTD input module or signal conditioner that supports 4-wire PT100 sensors. Connect the two current excitation leads and the two voltage sense leads to their respective terminals on the module, ensuring correct polarity as per your device's manual. The module will then provide a scaled analog output (e.g., 4-20mA, 0-10V) or digital reading proportional to the temperature.

According to the DIN EN 60751 standard, Class B defines the tolerance of the RTD. For a PT100, Class B accuracy is ±(0.3 + 0.005|t|)°C, where |t| is the absolute value of the temperature in °C. At 0°C, tolerance is ±0.3°C; at 100°C, it is ±0.8°C. This 'F0.3' designation is another common notation for the same Class B tolerance, indicating a high level of precision suitable for most industrial control applications.