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Flowline Echospan® lu80-84 ultrasonic level transmitter


The general purpose ultrasonic transmitter provides continuous level measurement up to 32.8’ (10m) with a 4-20 mA signal output and is configured via its integral push button display module. The Flowline EchoSpan ® LU80-84 Ultrasonic Liquid Level Sensor is a non-contact liquid level sensor that is well suited for corrosive, ultrapure, sticky or waste liquids, and is selected for bulk storage, tanker truck and neutralization tank applications.

Echospan lu80-84 ultrasonic liquid level sensor features:

  • Offered in 4 measurement ranges from 9.8’ (3m) to 32.8’ (10m)
  • Configuration is simple via integral push button display module
  • LCD display indicates level in inches, centimeters, and percentages
  • Narrow 2” or 3” beam width for applications with limited measurement space
  • Fail-safe intelligence and diagnostic feedback for simple troubleshooting
  • PVDF transducer and NEMA 4X polycarbonate enclosure for corrosive liquids
  • Automatic temperature compensation for accurate measurement

          Flowline LU80-84 Ultrasonic Liquid Level Sensor Dimensions:


          • Flowline DataLoop LI25 Level Indicator
          • Flowline Dataview LI55 Level Controller

          Flowline echotouch ug06 & ug12 reflective ultrasonic liquid level sensor dimensions:

          For optimum performance, install the Flowline ultrasonic level sensor using the below recommended or direct equivalent fittings.

          LM52-1400, LM52-2400, LM52-2800, LM52-3800

          LM52-1410, LM52-2410, LM52-3410, LM52-2810, LM52-3810


          LM50-1001-1, LM50-1001

          general specifications for flowline echospan liquid level transmitter:

          RANGE: LU80: 4” to 9.8’ (10cm to 3m), LU81: 8” to 18.0’ (20cm to 5.5m), LU83: 8” to 26.2’ (20cm to 8m), LU84: 12” to 32.8’ (30cm to 10m)

          ACCURACY: Â± 0.2% of range

          RESOLUTION: LU80: 0.019” (0.5mm), LU81/83: 0.039” (1mm), LU84: 0.078” (2mm)

          DEAD BAND: LU80: 4” (10cm), LU81/83: 8” (20cm), LU84: 12” (30cm)

          BEAM WIDTH: LU80: 2” (5cm), LU81/83/84: 3” (7.6cm)

          DISPLAY TYPE: LCD, 6-digit

          DISPLAY UNITS: Inch, cm and percent

          SUPPLY VOLTAGE: 12-28 VDC

          LOOP RESISTANCE: 500 ohms @ 24 VDC

          SIGNAL OUTPUT: 4-20 mA, two-wire

          SIGNAL INVERT: 4-20 mA or 20-4 mA

          SIGNAL FAIL SAFE: 4 mA, 20 mA, 21 mA, 22 mA or hold last

          PROCESS TEMP: F: -7° to 140°, C: -20° to 60°

          AMBIENT TEMP: F: -40° to 160°, C: -40° to 71°

          TEMP COMP: Automatic

          PRESSURE: MWP = 30 PSI (2 bar)


          ENCLOSURE MATERIAL: Polycarbonate

          ENCLOSURE HARDWARE: Brass & stainless

          ENCLOSURE VENT: Water tight membrane

          CONDUIT ENTRANCE: Dual, 1/2” NPT


          PROCESS MOUNT: LU80: 1” NPT (1” G), LU81/83/84: 2” NPT (2” G)

          MOUNT GASKET: Viton®

          CLASSIFICATION: General purpose