PT100 B-class 0.3 Precision Temperature Sensor 4x30mm Probe w/ 3M Cable

This sensor is specified with Class B (F0.3) accuracy per IEC 60751. Class B represents a standard industrial tolerance, typically ±(0.3 + 0.005|t|)°C, where |t| is the absolute temperature in °C. It is suitable for most process control applications, whereas Class A offers higher precision for laboratory-grade instruments.

The 4-wire configuration uses two wires for exciting the sensor with a constant current (typically 0.3-1.0 mA) and two separate wires for measuring the voltage drop across the RTD. This method eliminates errors caused by lead wire resistance. Connect the excitation pair to your instrument's current source and the sense pair to a high-impedance voltage input channel configured for RTD measurement.

The SUS304 stainless steel probe body and FEP-sheathed cable provide good resistance to moisture and many mild chemicals, making it suitable for immersion in non-corrosive liquids like water, oils, and certain process fluids. For highly corrosive or abrasive environments, verify the chemical compatibility of SUS304 stainless steel and FEP with your specific media.

The specified temperature range is -50°C to +200°C. Continuous operation at the upper limit of 200°C is permissible. Ensure the cable and any connection points outside the measured environment are rated for the ambient temperature, as the FEP cable jacket has its own temperature rating which may be lower than the probe's.