House Parts [Lifetime Warranty] RTD PT100 Temperature Sensor Probe - 3-Wire Digital Thermistor Probe for PID Temperature Controller
RTD PT100 temperature sensor probe with 3-wire cable and spade terminal connectors.
RTD PT100 3-wire temperature sensor probe with IP68 waterproof stainless steel housing and 2m cable.
Infographic showing RTD PT100 3-wire temperature sensor probe with stainless steel tip and spade terminal connectors.
RTD PT100 temperature sensor probe with 3-wire output leads and spade terminals for positive and negative connections.
RTD PT100 3-wire temperature sensor probe with spade connectors for industrial and scientific measurement.
Collage showing industrial and commercial applications for RTD PT100 temperature sensor probes.
Technician using a tablet to monitor an industrial RTD PT100 temperature sensor probe system.
RTD PT100 temperature sensor probe with 3-wire cable and spade terminal connectors.
RTD PT100 3-wire temperature sensor probe with IP68 waterproof stainless steel housing and 2m cable.
Infographic showing RTD PT100 3-wire temperature sensor probe with stainless steel tip and spade terminal connectors.
RTD PT100 temperature sensor probe with 3-wire output leads and spade terminals for positive and negative connections.
RTD PT100 3-wire temperature sensor probe with spade connectors for industrial and scientific measurement.
Collage showing industrial and commercial applications for RTD PT100 temperature sensor probes.
Technician using a tablet to monitor an industrial RTD PT100 temperature sensor probe system.
Lifetime Warranty

[Lifetime Warranty] RTD PT100 Temperature Sensor Probe - 3-Wire Digital Thermistor Probe for PID Temperature Controller

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RTD PT100 Temperature Sensor

Key Features

  • Sensing Element: Platinum Resistance Thermometer (Pt100)
  • Resistance: 100 Ohms at 0°C (32°F)
  • Configuration: 3-wire design for enhanced measurement accuracy
  • Probe Sheath: Stainless steel construction for durability and corrosion resistance
  • Temperature Range: Varies by model, common ranges include -50°C to 200°C
  • Termination: Stripped lead wires for connection to terminal blocks or controllers

Replaces / Cross-Reference Part Numbers

  • 3FWX3
  • RTD00576
  • 3290

Compatibility & Fitment

  • Compatible with PID temperature controllers, digital thermometers, PLCs, and data acquisition systems that accept a 3-wire Pt100 input.
  • Probe diameters and lengths vary by model to fit different thermowells and mounting requirements.
  • Available with process connections such as 1/2 in. NPT threads for secure installation in pipes or vessels.

When to Replace

  • Inaccurate, fluctuating, or erratic temperature readings.
  • Controller displays an open circuit, short circuit, or sensor error message.
  • Visible physical damage to the probe sheath, transition, or cable insulation.
  • No response to changes in temperature.

Installation Tips

  • Ensure the measurement device is configured for a 3-wire Pt100 RTD input.
  • For liquid or gas measurement, ensure the sensing portion of the probe is fully immersed in the flow.
  • Do not bend the cable sharply at the probe transition point.
  • Verify wire connections are correct per the controller's documentation (typically two common wires and one sense wire).
  • Use a thermowell for applications in high-pressure or corrosive environments.
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  • Perfect fit

    Perfect fit

    Our product is compatible with Raspberry Pi, Arduino and other Microcontrollers
  • Premium quality

    Premium quality

    The sensor is crafted from stainless steel and high-quality PVC, enhancing durability.
  • Saving solution

    Saving solution

    Effortlessly temperature measuring with our Sensors - BlueStars brings DIY solutions to help you deal with any trouble
  • Simple installation

    Simple installation

    Our product is used in refrigerators, warehouses, storage tanks, power rooms, cable trunking,...
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FAQ

A 3-wire RTD sensor is designed to compensate for lead wire resistance. By using the third wire, the measuring instrument can subtract the resistance of the lead wires from the total measurement, providing significantly higher accuracy compared to a 2-wire configuration, especially when the sensor is located at a distance from the controller.
This PT100 probe is a universal industrial-grade sensor compatible with most PID temperature controllers, PLC input modules, and digital thermometers that support 3-wire RTD inputs. It is commonly used in HVAC systems, food processing equipment, laboratory ovens, and industrial machinery.
A failing RTD sensor typically displays erratic temperature readings, a 'sensor error' or 'open loop' message on your controller, or a reading that is stuck at a fixed value regardless of actual temperature changes. If the sensor shows infinite resistance or zero resistance when tested with a multimeter, it is faulty and requires replacement.
Installation typically requires a screwdriver for terminal block connections, wire strippers, and potentially a wrench if the probe is being threaded into a thermowell. If you are extending the leads, ensure you use high-quality shielded cable to prevent electrical interference.
Ensure that the sensor is fully seated in the medium you are measuring to avoid ambient temperature interference. When wiring to your controller, verify the pinout configuration; while the two wires of the same color are interchangeable, the third wire must be connected to the correct terminal to ensure accurate lead-wire resistance compensation.