# Adafruit PT100 RTD Temperature Sensor Amplifier - MAX31865 (ADA3328)

**URL:** <https://forum.core-electronics.com.au/t/adafruit-pt100-rtd-temperature-sensor-amplifier-max31865-ada3328/22804>\
**Category:** Product Questions\
**Created:** [4 July 2025 07:41 UTC](https://forum.core-electronics.com.au/t/adafruit-pt100-rtd-temperature-sensor-amplifier-max31865-ada3328/22804 "2025-07-04T07:41:21Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Core](https://yyz2.discourse-cdn.com/flex028/user_avatar/forum.core-electronics.com.au/core/32/57_2.png) [@Core](https://forum.core-electronics.com.au/u/Core)\
**Post date:** [4 July 2025 07:41 UTC](https://forum.core-electronics.com.au/t/adafruit-pt100-rtd-temperature-sensor-amplifier-max31865-ada3328/22804/1 "2025-07-04T07:41:21Z")

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This is a placeholder topic for [**“Adafruit PT100 RTD Temperature Sensor Amplifier - MAX31865”**](https://core-electronics.com.au/adafruit-pt100-rtd-temperature-sensor-amplifier-max31865.html) comments.

![](https://core-electronics.com.au/media/catalog/product/cache/5ba536955e3e815f4e908e49c1dd8155/3/3/3328-06.jpg)

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

[**Read more**](https://core-electronics.com.au/adafruit-pt100-rtd-temperature-sensor-amplifier-max31865.html)

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**Author:** ![James298530](https://avatars.discourse-cdn.com/v4/letter/j/51bf81/32.png) [@James298530](https://forum.core-electronics.com.au/u/James298530)\
**Post date:** [4 July 2025 07:41 UTC](https://forum.core-electronics.com.au/t/adafruit-pt100-rtd-temperature-sensor-amplifier-max31865-ada3328/22804/2 "2025-07-04T07:41:42Z")

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I have a MAX6675 module, however it tops out at 1023.8 deg c (k-type thermocouple)  
Is there a different module that will get to 1300 degree C ?  
Thanks

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**Author:** ![ahsrab292840](https://avatars.discourse-cdn.com/v4/letter/a/ecb155/32.png) [@ahsrab292840](https://forum.core-electronics.com.au/u/ahsrab292840)\
**Post date:** [4 July 2025 17:04 UTC](https://forum.core-electronics.com.au/t/adafruit-pt100-rtd-temperature-sensor-amplifier-max31865-ada3328/22804/3 "2025-07-04T17:04:20Z")

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> [@James298530](#):
>
> I have a MAX6675 module, however it tops out at 1023.8 deg c (k-type thermocouple)  
> Is there a different module that will get to 1300 degree C ?

If you regularly need **\>1300°C** , consider **Type R, S, or B** thermocouples, and use **MAX31856** , which supports them.

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**Author:** ![Ryan](https://yyz2.discourse-cdn.com/flex028/user_avatar/forum.core-electronics.com.au/ryan/32/12254_2.png) [@Ryan](https://forum.core-electronics.com.au/u/Ryan)\
**Post date:** [6 July 2025 23:33 UTC](https://forum.core-electronics.com.au/t/adafruit-pt100-rtd-temperature-sensor-amplifier-max31865-ada3328/22804/4 "2025-07-06T23:33:52Z")

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Hey @James298530,

Welcome to the forum!

@ahsrab292840 is correct that this amplifier is designed for PT1000 RTD sensors, which are typically used for temperatures up to around 600°C.

For your temperature range up to 1300°C, you’ll want to use a thermocouple designed for high temperatures, such as Type R, S, or B. These thermocouples can measure temperatures up to about **1800°C** , depending on the type. For that, check out this amplifier, which supports those thermocouples:

> **[Adafruit Universal Thermocouple Amplifier MAX31856 Breakout](https://core-electronics.com.au/adafruit-universal-thermocouple-amplifier-max31856-breakout.html)**
>
> Thermocouples are very sensitive, requiring a good amplifier with a cold-compensation reference, as well as calculations to handle any non-linearities. For a long...