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Nickel vs Platinum RTDs — How to Read It in Project Specs

September 29, 2025

When a project spec calls for a 1k RTD sensor, how do you know if it’s Nickel (Ni1000) or Platinum (Pt1000)?

 

Here are 4 quick checkpoints:
1. Resistance & Reference Temp
Pt100 / Pt1000 → Platinum
Ni1000 / Ni500 → Nickel

2. Standards Referenced
IEC 60751 → Platinum RTD
DIN 43760 → Nickel RTD

3. Tolerance & Accuracy Wording
Class A / B (IEC) → Platinum
±0.5°C or % values → Nickel

4. Region & Vendor Practices
North America → Platinum is standard
Europe (older specs) → Nickel is still common
Siemens Europe → Ni1000 often used
Johnson, Honeywell, Distech → Pt1000

Rule of Thumb: If the spec only says “1000 Ω RTD” → always check for Ni vs Pt keywords or the standard reference.

Getting this right avoids compatibility issues between controllers and sensors!

Which do you see more often in your projects — Ni1000 or Pt1000?

 

 

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