This manual provides installation, connection, commissioning, maintenance, and troubleshooting instructions for the Siemens SITRANS LG250 radar level sensor.
The Siemens SITRANS LG250 is a radar sensor designed for continuous level or interface measurement in liquids. It supports both rod and cable probes and features SIL certification for use in safety instrumented systems (SIS). The device operates by sending high-frequency microwave pulses along a steel cable or rod, which reflect off the medium surface to determine the level. This manual is written in Chinese.
| Safety Integrity Level | SIL2 (single channel), SIL3 (uniform redundancy with HFT 1) |
|---|---|
| Probe Types | Rod and cable |
| Output Signal | 4 ... 20 mA/HART - two-wire |
| Hardware Version | From version 1.0.0 |
| Software Version | From version 1.2.0 |
The instrument is certified for SIL2 in single-channel operation and can reach SIL3 in uniform redundancy with HFT 1.
It supports both rod and cable probes for level measurement.
It provides a 4 ... 20 mA/HART two-wire output signal.