> **Source:** Core Electronics is an Australian maker-electronics retailer and manufacturer based in Newcastle, NSW, run by a team of makers and educators. We design and manufacture our own product lines (PiicoDev, CE originals) and are official retailers for iconic maker and industrial brands including Raspberry Pi, Arduino, Adafruit, SparkFun and DFRobot. Orders ship Australia-wide from our Newcastle warehouse. Prices are in AUD and include GST. Pricing, stock and dispatch on this page are generated from the store's live catalog. Full machine-readable index: https://core-electronics.com.au/llms.txt

# Platinum RTD Sensor - PT100

**Type:** Product page · **SKU:** SPX-17059 · **Brand:** [Sparkfun](https://core-electronics.com.au/brands/sparkfun-australia)
**Page:** https://core-electronics.com.au/platinum-rtd-sensor-pt100.html ([markdown](https://core-electronics.com.au/platinum-rtd-sensor-pt100.html.md))

It is suitable for applications in the temperature range of -200°C to 600°C but are more commonly used in the range -50°C to +250°C...

## Pricing

- **Price:** $36.95 (inc GST) — $33.59 AUD, exc GST
- **Quantity discounts:** 5+ $32.58 (exc GST) · 25+ $31.91 (exc GST) · 100+ $30.56 (exc GST)

## Availability & dispatch

- In stock, ships same business day if ordered before 2PM (Australia/Sydney).
- We can dispatch 2 today, and up to 3 more in 5–11 days.

## How to buy

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## Description

A PT100 is a Platinum RTD (Resistance Temperature Detector) with a resistance of 100O at 0°C which changes with temperature. It is suitable for applications in the temperature range of -200°C to 600°C but are more commonly used in the range -50°C to +250°C.

To use this sensor with our [Qwiic PT100 ADC](https://core-electronics.com.au/search/?q=16770) please connect the red wires to terminals 3 & 4. Connect the white wire to terminal 2. Short the *A* and *B* pads on the [back of the Qwiic PT100 PCB](https://core-electronics.com.au/attachments/localcontent/16770-Qwiic_Instrument_ADC_-_PT100-03_19950d9f876.jpg). Be sure to use [Example4-3-Wire](https://github.com/sparkfun/SparkFun_ADS122C04_ADC_Arduino_Library/blob/master/examples/Qwiic_PT100_ADS122C04/Example4_3-Wire/Example4_3-Wire.ino) from within the ADS122C04 library.

How do PT100 sensors work? On four-wire sensors the red wires are connected to one end of the resistor; the white wires are connected to the other end. For three-wire, they use the same scheme: the two reds to one end; and one white to the other. Using a DMM you should see ~1 Ohm between the red wires; and ~100 Ohms between red and white.

- 100Ω nominal resistance at 0°C
- Temperature Coefficient (0°C up to 100°C): 3.85 - 10-3 K-1
- Tolerance classes to DIN EN 60751: A, B
- Operating Temperature Range: -50°C up to 550°C
- Measurement Current (DC) at 25°C: 1mA
- Maximal Permissible Peak Current (DC) at 25°C: 3mA
- Insulation Resistance: > 10MΩ
- Self-heating at 0°C: < 0.5 K / mW
 
- [Datasheet](https://core-electronics.com.au/attachments/localcontent/PT100_DATA_SHEET_52090d290c9.pdf)

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/i/m/image_914.jpg)