The 521 SMART series is a compact ultrasonic level transmitter designed for measuring liquid levels, bulk solids and powders up to 10 m. It offers a low‑signal output (4‑20 mA) and optional RS485 communication, with a robust housing rated IP65 for harsh industrial environments.
The manual provides guidance on installation positioning, wiring of power and signal connections, configuration of alarm outputs, and maintenance procedures. It also lists the electrical and mechanical specifications needed for proper integration into process control systems. This manual is written in Japanese.
| Maximum measurement distance | 10 m |
|---|---|
| Output signal | 4‑20 mA DC |
| Operating temperature range | -20 °C to 50 °C |
| Beam angle (half angle) | 6°‑7° |
| Maximum power consumption | 3.5 W |
| Working pressure range | 0.07‑0.13 MPa |
| Temperature sensor | PT100 |
The device can measure up to 10 meters.
The unit operates from –20 °C to +50 °C.