> **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 - 3 Wire 1 meter long

**Type:** Product page · **SKU:** ADA3290 · **Brand:** [Adafruit](https://core-electronics.com.au/brands/adafruit-australia)
**Page:** https://core-electronics.com.au/platinum-rtd-sensor-pt100-3-wire-1-meter-long.html ([markdown](https://core-electronics.com.au/platinum-rtd-sensor-pt100-3-wire-1-meter-long.html.md))

For precision temperature sensing, nothing beats a Platinum RTD. Resistance temperature detectors (RTDs) are temperature sensors that contain a resistor that changes...

## Pricing

- **Price:** $23.20 (inc GST) — $21.09 AUD, exc GST
- **Quantity discounts:** 10+ $20.45 (exc GST) · 50+ $20.04 (exc GST)

## Availability & dispatch

- In stock, ships same business day if ordered before 2PM (Australia/Sydney).
- We can dispatch 10 today; more stock is typically available with a 8–12 day lead time.

## How to buy

- **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=ADA3290:1` (comma-separated SKU:qty pairs) and share the link. Opening it shows a confirmation page with live pricing and stock before anything is added to the cart.
- **Verify the cart first:** fetch `https://core-electronics.com.au/cart/link/ADA3290:1.md` for live line prices (inc & exc GST, quantity discounts applied), stock and dispatch estimates, and totals. Append `/to/{AU-postcode}` (or `/to/{country-code}:{postcode}`) before `.md` for delivery options and prices to that destination. Unknown, retired, or out-of-stock SKUs are flagged. (Query form `cart/link.md?items=...` also works but some robots parsers refuse query strings here.)
- **Checkout** is completed on-site and includes a captcha at the payment step. Share the cart link; checkout takes it from there.
- **Search the catalogue:** `https://core-electronics.com.au/search/{query}.md` (URL-encode the query; pages 2-3 at `search/{query}/{page}.md`; `search.md?q=` also works)
- **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt
## Description

For precision temperature sensing, nothing beats a Platinum RTD. Resistance temperature detectors (RTDs) are temperature sensors that contain a resistor that changes resistance value as its temperature changes, basically a kind of thermistor. In this sensor, the resistor is actually a small strip of Platinum with a resistance of 100 ohms at 0°C, thus the name PT100. Compared to most NTC/PTC thermistors, the PT type of RTD is much most stable and precise (but also more expensive) PT100's have been used for many years to measure temperature in laboratory and industrial processes, and have developed a reputation for accuracy (better than thermocouples), repeatability, and stability.

This high-temperature PT100 sensor is equipped with an stainless steel shield that is good from -50°C to 280°C.

**PT100 features:**

- Based on resistance measurement principles
- Resistor material is Platinum with a value of 100 ohm at temperature 0°C
- Platinum has a positive resistance temperature factor; resistance increases with rising temperature
- Resistance variation is a function of temperature: 0.385O/°C nominal
- High accuracy and stability compared to thermocouples, silicon-based temperature sensors, or thermistors
 
Each sensor comes with *three wires.* Two of the wires connect to either side of the platinum resistor like you'd expect. The *third wire* is also connected to one end of the PT100. If your RTD amplifier supports 3-wire sensors, it will drive the resistor with the first two wires, and measure the voltage differences so that it can subtract any voltage drop from the wires. If your RTD amplifier only has 2-wire support simply leave the third wire disconnected.

[Use Adafruit's Adafruit RTD sensor breakout to connect this fine sensor to your favorite microcontroller](https://core-electronics.com.au/adafruit-pt100-rtd-temperature-sensor-amplifier-max31865.html)

## Technical Details

Cable specs:

- Stainless steel tube: 4mm diameter by ~30mm long (size of stainless steel capsule may vary!)
- Cable is approx 1m / 100cm long
- Contains a PT100 temperature sensor
- Three wires with terminal prong ends
 
PT100 technical specs:

- Usable temperature range: -200 to 550°C (-328°F to +1,022°F)
- Uses 3-wire interface
- ±0.5°C Accuracy from -10°C to +85°C
 
Product Weight: 19.3g / 0.7oz

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/3/2/3290-01.jpg)