Level radar transmitters are designed for continuous level measuring of conductive or non-conductive liquids, pulps, and slurries.  Radar transmitters are broken up into two main technologies, Non Contact, and Guided Wave. Both Radar sensing technologies operate on the well-known time domain reflectometry (TDR) principle.

Benefits of Non Contact Radar Transmitters

  • Non contact design eliminates the requirement of material compatibility between the liquid and the sensor since it’s a through the air sensing technology.
  • Non contact design also ensures there are no issues with viscous medias coating contact based sensors.
  • Bluetooth connectivity for simple tank configuration and measurement viewing.
  • Minimal upper and lower dead bands compared to guided wave radar transmitters.

Benefits of Guided Wave Radar Transmitters

  • Works in lower dielectric liquids, 1.4 versus 2 on non contact radar transmitter. 
  • Higher temperature and pressure rating than non contact radar transmitter.
  • Larger sensing range, 80’ (24m) versus 50’ (15m) on non contact radar transmitter.
  • Built in display for local measurement viewing and configuration.

 

Non Contact radar transmitters send microwaves signals through the air. As soon as the impulse reaches the surface of the media, it is reflected to the electronic module. Level distance is directly proportional to the flight time of the impulse.

Guided Wave radar transmitters send microwaves along a probe, or cable. As soon as the impulse reaches the surface of the media, it is reflected to the electronic module. Level distance is directly proportional to the flight time of the impulse.

The reflected signal is dependent on the dielectric constant of the media. Radar transmitter technology is unaffected by the properties of the media as well as that of the space above it. Measurement is also unaffected by the change in the physical properties of the materials such as temperature or pressure.


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Features:

  • Non-contact
  • 2" NPT mounting
  • PVDF housing
  • Intrinsically Safe
  • UL/c-UL
  • ATEX
  • IECEx
  • 50’ (15m) sensing range
  • 0.2” (5mm) accuracy
  • Modbus
  • 4-20mA
  • Bluetooth®
  • IP 67
  • 15' or 30' TPE Jacketed Cable
  • 1 ¼”-12 For Bracket Mounting
  • Full vacuum to 43 PSI (3 bar)
  • -40 to 176F (80C).



radar sensor

RLI Product Page >


Features:

  • Multiple mountings
  • 316 SS Probes and Cables
  • 80’ (24m) sensing range
  • 0.2” (5mm) accuracy
  • 4-20mA
  • Local display
  • IP 67
  • ½” NPT Conduit Connection
  • Full vacuum to 580 PSI (40 bar)
  • -22F (-30C) to 194F (90C).



guided wave radar