EchoBeam® is the most reliable and easy-to-use non-contact level sensor transmitter. Flowline’s 80-GHz radar technology is unaffected by most media, process or environmental factors, and our intuitive LevelTapTM App makes configuration simple.


The LR80 general purpose 80-GHz radar level sensor transmitter provides continuous level measurement up to 32.8’ (10m) for liquids or 16.4’ (5m) for solids with a 4-20 mA signal output. The level sensor transmitter is wirelessly configured over Bluetooth via our LevelTapTM App which enables you to see the level, verify the status, and manage the settings of connected level sensor transmitters from the safety of the ground or nearby catwalk. The level sensor transmitter measures liquid and solids media with a dielectric constant value ≥ 1.6, such as water, chemical or petroleum-based liquids, and pellet, grain, powder or aggregate solids. Select this level sensor transmitter for tank, sump, lift station, weir, canal, reservoir, bin, conveyor or transfer station applications.


  • 80-GHz technology provides reliable, maintenance-free operation
  • Measures level height, air gap, tank volume or open channel flow
  • Rugged PVDF antenna and enclosure for corrosive liquid or solids
  • IP68 rated sensor for harsh outdoor or below grade installations
  • Shielded 10m PVC jacketed cable for corrosive level environments
  • Zero dead band maximizes the potential fill capacity of small tanks
  • Optionally measures through top wall of plastic or fiberglass tanks
  • Bluetooth wireless configuration via the LevelTapTM mobile App
  • Lowest cost radar sensor for your basic level requirements


Download the free LevelTapTM App at the Apple Store, Google Play or Baidu Store, register and go to Demo Sensors. There you can view the level status and step-by-step or advanced configuration examples prior to sensor purchase.


P/N Description From
LR80-0000 Vertical cable, 1 1/2” NPT, 4-20 mA $795.00
LR80-0010 Vertical cable, 1 1/2” G, 4-20 mA $800.00
LM50-3S21 Short bracket, 1″ NPT lock nut, 316L $160.00
LM50-4S21 Short bracket, 1″ G lock nut, 316L $160.00
LM50-3S31 Short bracket, 1 1/2″ NPT lock nut, 316L $160.00
LM50-4S31 Short bracket, 1 1/2″ G lock nut, 316L $160.00
LM50-3S22 Long bracket, 1″ NPT lock nut, 316L $220.00
LM50-4S22 Long bracket, 1″ G lock nut, 316L $220.00
LM50-3S32 Long bracket, 1 1/2″ NPT lock nut, 316L $220.00
LM50-4S32 Long bracket, 1 1/2″ G lock nut, 316L $220.00
LM53-0440 Capped adapter, 1 1/2″ NPT to 1 1/2″ tri-clamp, PTFE $220.00
LM53-0444 Capped adapter, 1 1/2″ NPT to 2″ tri-clamp, PTFE $220.00
LM53-2440 Capped reducer, 1 1/2″ to 2″ NPT, PTFE $220.00
LM53-1S80 Adapter, 1 1/2″ NPT to 1 1/2″ tri-clamp, 316L $160.00
LM52-1880 Adapter, 1 1/2″ NPT to 2″ tri-clamp, 316L $160.00
LM53-4855 Adhesive tank top fitting, 1 1/2″ NPT, PVC $160.00
LM53-3850 Flange, 3″ ANSI x 1.5″ NPT, CPVC, schedule 80 $302.00
LM53-3S50 Flange, 3″ ANSI x 1.5″ NPT, 316L $378.00


Maximum range: Liquid: 32.8’ (10m) with media dielectric ≥ 20 and no agitation; Solids: 16.4’ (5m) with media dielectric ≥ 6 and no dust

Frequency: 80-GHz., W-band, FMCW

Accuracy: 0.4m to 10m: ± 5mm; 0.00m to 0.39m: ± 10mm

Dead band: 0” (0mm)

Beam angle: 8°

Min. dielectric: ≥ 1.6

Bluetooth version: Bluetooth 5.0

Bluetooth range: 26.2′ (8m)

Configuration: LevelTap™ App (iOS & Android)

Memory: Non-volatile

Signal output: 4-20 mA, two-wire

Max. signal dist: 1,000’ (304m)

Signal fail-safe: Selectable high, low or hold last value

Supply voltage: 12-30 VDC

Max. consumption: 22.5 mA

Process temp.: F: -40º to 140º; C: -40º to 60º

Temp. comp.: Automatic

Storage temp.: F: -40° to 176°, C: -40° to 80°

Pressure: -14.5 to 43.5 psi (-1 to 3 bar)

Enclosure rating: Type 6P (IP68)

Encl. material: PVDF (pigmented polyvinylidene fluoride)

Antenna material: PVDF (natural polyvinylidene fluoride)

Cable jacket mat.: PVC (polyvinyl chloride)

Cable seal mat.: Viton GLT (fluoroelastomer)

Cable orientation: Vertical

Shielded cable: 2-conductor

Cable length: 32.8’ (10m)

Conduit connect.: 1” NPT or 1” G

Process mount: 1 1/2” NPT or 1 1/2” G

Mount gasket: Viton GLT (fluoroelastomer) for G thread only

Classification: General purpose (cCSAus)

Approvals: C22.2 No. 61010-1-12

Compliance: FCC: Part 15.256, 15.209, 15C; ISED IC: RSS-102, RSS-211, RSS-247; UKCA RER 2017: 6(1)(a), 6(1)(b), 6(2); CE/RED 2014/53/EU: EN 302 372, EN 302 729, EN 301 489-1, -33, EN 300 328; SRRC: (No. [2002] 353); RoHS, REACH, CRN, conflict minerals


If you want help in selecting a sensor for your application, please submit a Level Questionnaire. An engineer will review your requirements and suggest a product solution via email.