Level Instrumentation > Transmitters > Siemens SITRANS LG200


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Siemens SITRANS LG200 Guided Wave Radar Transmitter

Siemens SITRANS LG200 is a guided wave radar transmitter for short and medium range level, level/interface and volume measurement of liquids and solids. It is unaffected by changes in process conditions, high temperatures and pressures, and steam. The LG200 provides accurate measurement in level, volume, and interface applications. For short and extended applications, LG200 offers coaxial, single or twin rod probes, and single or twin cable probes up to 75 feet.

Looking for guided wave radar for hygienic liquids, aggressive media, or solids? See the new SITRANS LG guided wave radar transmitters.

Key Specifications

  • Loop-powered guided wave radar transmitter for level measurement in liquids, slurries, interfaces, and bulk solids
  • Combines technologies of time-domain reflectometry (TDR) and equivalent time sampling (ETS)
  • Measures accurately on materials with dielectric as low as 1.4
  • Reliable level measurement on harsh applications with pressure up to 6250 psi and temperatures as high as 800°F (427°C)
  • Measurement accuracy to 2.5 mm (0.12")
  • One transmitter head for many applications; Simplifies operations and reduces cost of stocking parts and training operators
  • Coaxial, rigid, and flexible single or twin rods for many applications
  • View our full offering of Siemens (Milltronics) level instrumentation

Specifications, Manuals, and Supporting Literature

Model Selection Guide

Use this table to find the right model for your application.  Don't see the option you need? Call a Lesman sales specialist at 800-953-7626

Coaxial probes Single rod probes Twin rod probes
Probe Type Application Probe Type Application Probe Type Application
General purpose

Liquids with dialectric as low
as 1.4


Liquids and slurries with a
dialectric ≥ 1.9 (>10 if away from
tank wall)
twin rod

For applications where buildup is
possible. Dielectric ≥ 1.9

High pressure

5000 PSIG

Flexible for
Applications with severe coating
and buildup, ranges up to 75 ft
twin rod
Dirty, visous or low-dielectric
High pressure,
high temperature
750° F at 2000 PSIG


High viscosity liquids

twin rod
Bulk solids


Saturated steam environments

Sanitary (3A
Food and beverages,
pharmaceutical, semiconductors

Measures both upper liquid
level and interface level

Aggressive media


Measures 100% full point of
High pressure,
high temperature
Vicsous materials

Flexible for solids Bulk solids ranges up to 75 ft

See a table of dialectric constants for common materials.


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