Guided Radar Level Measurement

Guided Wave Radar Level Transmitters offer advanced dual interface capabilities and come with integrated digital displays, providing a measuring range of up to 38 meters (124 feet).

Product Collection

Radar Level Transmitters
Radar Level Meter

Non-contact radar, also known as a radar level meter, measures level by emitting microwave signals (e.g., 26GHz, 80GHz) from the top of the tank. These signals reflect off the surface of the material, and the instrument calculates the distance based on the return time.

Key Characteristics

  • Non-contact measurement (antenna does not touch the product)
  • Uses microwave radar waves
  • Narrow beam angle (especially 80GHz)
  • Works well in harsh environments
  • Very low maintenance

Best Applications

  • High tanks or silos
  • Solids (cement, grain, powder)
  • Liquids with vapor or steam
  • Corrosive or sticky liquids
  • Pressurized or high-temperature tanks
Guided Wave Radar Transmitters

A Guided Radar Level Transmitter uses a probe or rod/cable that extends inside the tank. Radar pulses travel down the probe and reflect when they hit the material surface. This technology is also called Time Domain Reflectometry (TDR).

Key Characteristics

  • Contact-type technology (probe touches the product)
  • Uses guided microwave pulses
  • Very stable in narrow or small tanks
  • Unaffected by foam, vapor, and turbulence
  • Works well with liquids with low dielectric constant

Best Applications

  • Small tanks and vessels
  • Storage tanks with agitators or internal obstructions
  • Interface measurement (oil-water separation)
  • Viscous or sticky liquids where non-contact radar may struggle
  • Applications requiring extremely stable readings in small volumes
Radar Level Meter vs. Guided Radar Level Transmitter
FeatureRadar Level Meter (Non-Contact)Guided Radar Level Transmitter (TDR)
Contact with MediumNo contactProbe is in contact with medium
TechnologyMicrowave radar (26/80GHz)Guided radar pulses (TDR)
Best ForTall tanks, harsh environments, solidsSmall tanks, interface measurement
Sensitivity to ConditionsUnaffected by dust/steam (80GHz)Unaffected by foam/vapor
Installation SpaceNeeds free space above materialIdeal for narrow tanks
MaintenanceVery lowRequires cleaning on sticky media
Dielectric RequirementMedium-to-high dielectricWorks well even with low dielectric liquids
CostHigher for 80GHz modelsOften more affordable
Solids MeasurementExcellent (especially 80GHz)Limited to some models

Unlike non-contact radar sensors, guided radar (also known as Time Domain Reflectometry or TDR technology) uses a probe (waveguide) to direct radar pulses down to the material surface, ensuring accurate and stable readings even in challenging process conditions.

Need assistance choosing the right Guided Radar Level Sensors? Contact us today for expert recommendations and fast delivery!

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