

The YYR500 is a mineral-insulated resistance thermometer with a Pt100 sensing element, built to IEC 60751 Class A or B. The flexible mineral-insulated insert and stainless sheath make it suitable for pipelines, vessels and machinery where reliable, stable RTD measurement is required.
| Sensing element | Pt100 RTD (Pt1000 on request) |
|---|---|
| Tolerance class | Class A / Class B per IEC 60751 |
| Nominal resistance | 100 Ω at 0 °C |
| R(100 °C) / R(0 °C) | 1.3851 |
| Measuring current | below 2 mA (self-heating avoided) |
| Sheath | Mineral insulated stainless steel |
| Termination | Head-mounted transmitter or connection head |
| Process connection | Thread / flange (optional) |
| Typical media | Liquids, gases and steam |
| Options | Transmitter, thermowell, special lengths |
Tell us your media, temperature range and installation — we reply with a best-fit configuration within one business day.
Request a Quote Talk to an EngineerDocuments are sent by email on request — the latest revision is always provided.
Class B (±0.3 °C at 0 °C) suits most industrial loops; Class A (±0.15 °C) is for custody, laboratory or high-accuracy duty.
Yes — the YYBY100 head-mounted transmitter turns it into a 4-20 mA loop in one unit.
Yes — stainless and special-alloy thermowells are manufactured to your process dimensions.
Share your process conditions — a tailored proposal arrives within one business day.