Pr ot her mo NMT 539 is a safe multi-signal converter with high-precision average temperature measurement and bottom water level (WB) measurement sensors for total quantity control and transfer measurement. It has the characteristics of safe instruments, compatible with temperature probes from many third-party manufacturers, friendly ToF operation software, and a variety of process connection methods and cable inlets.
This manual describes the Prothermo NMT539 HART‑based temperature and water‑level converter. It explains the four functional variants (temperature only, water‑level only, combined, and third‑party sensor compatibility) and how the device integrates with Endress+Hauser Proservo NM5x series level transmitters and NRF‑590 indicators.
Installation, connection, and safety information are covered, including recommended mounting heights, sealing requirements, and approved connection sizes. Technical specifications such as temperature range, sensor types, and communication parameters are listed for system designers. This manual is written in Japanese.
| Temperature measurement range | -200 °C to +235 °C |
|---|---|
| Water‑level measurement range | 1 m to 2 m |
| Maximum number of temperature measurement points | 16 |
| Supported temperature sensor types | Pt100, Cu90, Cu100, Pt‑Cu100 |
| Approved connection sizes | G 1/2", NPT 1/2", PG 1/6", M20 |
The converter supports Pt100, Cu90, Cu100 and Pt‑Cu100 temperature sensors.
Up to 16 temperature measurement points can be connected.
Approved thread sizes are G 1/2", NPT 1/2", PG 1/6" and M20.