This document is an introduction manual for SITRANS PROBE LU, released in June 2004. It provides detailed information on the installation, operation, and programming of the product.
This manual introduces the SITRANS Probe LU, a continuous level monitoring instrument that includes a sensor and electronics powered from a loop. It covers safety requirements, application examples, system operation, programming, and certification details.
Key sections include safety information, installation guidance, wiring and connection instructions, performance characteristics, and a full list of parameters with HART communication support. The document also contains detailed specifications, environmental limits, and troubleshooting advice for hazardous‑area installations. This manual is written in Chinese.
| Power supply | 24 V DC |
|---|---|
| Maximum loop resistance | 550 Ω |
| Maximum voltage | 30 V DC |
| Output current | 4 to 20 mA |
| Frequency | 54 kHz |
| Measurement range | 0.25 m to 6 m (type 6 m) or 0.25 m to 12 m (type 12 m) |
| Accuracy | ±0.15 % of span or 6 mm (0.25 ") whichever is greater |
| Resolution | ≤3 mm (0.12 ") |
| Update time at 4 mA | ≤5 s |
| Beam angle | 10° at -3 dB |
| Temperature compensation | Built‑in |
The instrument supports HART communication.