Adafruit
Platinum RTD Sensor - PT100 - 3 Wire 1 meter long
A platinum resistance temperature detector (RTD) with a 100 Ω resistance at 0°C, offering superior accuracy and long-term stability compared to thermocouples...
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A platinum resistance temperature detector (RTD) with a 100 Ω resistance at 0°C, offering superior accuracy and long-term stability compared to thermocouples and thermistors. PT100 sensors are widely used in laboratory and industrial temperature measurement where precision and repeatability matter.
This sensor features a stainless steel shield rated for temperatures up to 550°C and a 1-metre lead length with a 3-wire configuration for improved measurement accuracy.
Key Features
- Platinum Element – 100 Ω at 0°C with a temperature coefficient of 0.385 Ω/°C
- High Accuracy – More precise and repeatable than thermocouples or thermistors
- Stainless Steel Probe – Rated up to 550°C
- 3-Wire Configuration – Third wire enables lead resistance compensation for accurate readings
- 1 m Lead Length – Flexible placement away from the measurement point
Specifications
- Sensor Type – PT100 (platinum RTD)
- Resistance at 0°C – 100 Ω
- Temperature Coefficient – 0.385 Ω/°C
- Max Temperature – 550°C
- Wiring – 3-wire
- Lead Length – 1 m
- Probe Material – Stainless steel
Ideal For
- Precision temperature measurement in lab and industrial settings
- High-temperature monitoring (up to 550°C)
- Arduino and Raspberry Pi projects with an RTD amplifier breakout
- Food processing, HVAC, and environmental monitoring
Package Contents
- 1× PT100 Platinum RTD Sensor (3-wire, 1 m lead)
Jargon buster
Plain-language definitions for the technical terms used above.
- breakout
- A breakout board carries a small or fine-pitched component and brings its connections out to standard, breadboard- and header-friendly pins. Describing a part as a breakout means it can be wired into a project without soldering directly to the component's tiny contacts.
- Matter
- A smart home connectivity standard designed to let devices work across different ecosystems. It matters if you want a project to integrate more easily with platforms such as Apple Home, Google Home, or other Matter-compatible systems.
- RTD
- An RTD, or resistance temperature detector, is a temperature sensor whose resistance changes in a predictable way as it heats or cools, giving accurate and stable readings (PT100 and PT1000 are common types). When a product lists an RTD it indicates precise temperature sensing, which also helps applications such as conductivity probes correct their readings for temperature.
- Shield
- An add-on board that plugs into a main controller board to give it extra features such as sensing, motor control or communication. Knowing a product supports shields helps you judge whether it can connect neatly into an existing maker-board setup.
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