Thermometrics supplies bare Pt100 and Pt1000 resistance sensing elements for OEM integration into complete sensor assemblies. Wire-wound and thin-film chip types, certified to IEC 60751 Class A and Class B tolerances.
| Parameter | Wire-Wound | Thin-Film |
|---|---|---|
| Construction | Pure platinum wire wound on ceramic or glass mandrel, encapsulated | Platinum film deposited on alumina substrate, laser-trimmed to tolerance |
| Accuracy | Class A, Class AA achievable | Class B, Class A (select grades) |
| Temperature Range | −200°C to 850°C | −50°C to 500°C |
| Vibration Resistance | Good with strain relief | Excellent (no wound wire) |
| Moisture Sensitivity | Sealed (glass encapsulation) | Sealed (epoxy or glass) |
| Long-Term Stability | Excellent (<0.05°C/year) | Good (<0.1°C/year) |
| Physical Size | Larger | Compact — ideal for miniaturization |
| Cost | Higher | Lower for volume OEM |
Thermometrics supports OEM customers with blanket order programs for resistance elements. Certified lot documentation, consistent supplier qualification, and shelf-stock availability reduce lead time in production environments. Contact us to discuss vendor qualification requirements.
High-alumina (99.7% Al₂O₃) single and twin-bore ceramic tubes protect the element in high-temperature or aggressive-gas environments. Available closed-one-end or open-both-ends.
Extension leads attached by silver soldering, resistance spot welding, or mechanical crimp depending on temperature class and OEM requirement. PTFE, fiberglass, and ceramic-fiber insulation options.
For 2- and 3-wire configurations, matched-resistance extension leads minimize lead resistance imbalance. Available pre-cut to specified lengths with resistance values certified on lot documentation.
Talk directly to the engineering team that builds your assemblies. No bots, no call centers.