This document introduces several level measurement instruments from Siemens (brand), including integrated ultrasonic level meters, ultrasonic electronic control units, and open channel flow measurement devices. These products are characterized by their compact structure, reliable performance, and accurate measurement, making them suitable for various applications such as liquid level, flow, and volume.
The Siemens SITRANS series provides ultrasonic and radar level measurement solutions for open and closed containers. The manual describes the probe‑type devices, sensor materials (ETFE or PVDF), built‑in temperature compensation and a range of accessories.
It includes detailed technical specifications, wiring diagrams, programming options (HART, SIMATIC PDM, infrared programmer) and safety information for reliable operation in industrial environments. This manual is written in Chinese.
| Measurement range | 0.25 ~ 5 m |
|---|---|
| Output current | 4 – 20 mA |
| Accuracy | ±0.15 % of range (≈6 mm) |
| Power supply | 24 VDC (12 – 30 V) |
| Operating temperature | -40 °C to 80 °C |
The SITRANS Probe LU can measure from 0.25 m up to 6 m or 12 m depending on the model.
It operates from a 24 VDC supply, with allowable input voltage between 12 V and 30 V.
The device supports HART, SIMATIC PDM, RS‑485, RS‑232 and an infrared hand‑held programmer.
The probe sensors are made of ETFE or PVDF, providing chemical resistance.