

The YYBY100 is a compact head-mounted temperature transmitter that converts a Pt100 RTD signal into a standard 4-20 mA or RS485 Modbus output. Its small PCB fits standard DIN form B connection heads, turning any YYR500 sensor assembly into a smart, linearised measurement loop.
| Measured variable | Temperature |
|---|---|
| Input sensor | Pt100 RTD |
| Measuring range | 0 to 100 °C or -50 to 100 °C (32 to 212 °F / -58 to 212 °F) |
| Accuracy | ±0.5% FS |
| Current output | 4-20 mA |
| Communication | RS485, Modbus RTU |
| Power supply | Loop powered (typ. 24 VDC) |
| Mounting | Head-mounted (DIN form B connection head) |
| Configuration | Local push buttons |
| Typical pairing | YYR500 RTD / YYC500 thermocouple assemblies |
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.
Yes — any 3-wire Pt100 per IEC 60751; 2-wire inputs reduce accuracy, ask our engineers for guidance.
The standard output is one of the two; order the variant that matches your control system.
Ranges are configured via local buttons — no PC or dongle needed.
Share your process conditions — a tailored proposal arrives within one business day.