Discontinued See EchoSonic® II LU27, LU28, LU29 or LU81

The general purpose two-wire ultrasonic transmitter provides non-contact level measurement up to 32'-8" or 12.2m, and is ideally suited for challenging corrosive, coating or waste liquids. The transmitter is broadly selected for atmospheric bulk storage, day tank, process vessel and waste sump applications. Media examples include ink and polymer.

  • Accuracy: ± 0.15% of span in air
  • Resolution: 0.125" (3 mm)
  • LED indication: Power, calibration and diagnostics
  • Memory: Non-volatile
  • Supply voltage: 14-28 VDC
  • Loop resist.: 600 ohms @ 24 VDC
  • Signal output: 4-20 mA, two-wire
  • Calibration: Target, calibration wire
  • Fail-safety: Reverts to 22 mA
  • Temp. comp.: Automatic
  • Process temp.: -40°F to 160°F; -40°C to 71°C
  • Electronics temp.: -40&#176F to 160°F; -40&#176C to 71°C
  • Pressure: 30 psi (2 bar) @ 25°C., derated @ 1.667 psi (.113 bar) per °C. above 25° C.
  • Enclosure rating: NEMA 6X (IP67)
  • Installed height: 1.7" (4.3 cm) above tank process mount
  • Encl. material: PC/ABS FR
  • Trans. material: PVDF Kynar
  • Cable jacket mat.: Polypropylene
  • Cable type: 3-conductor, shielded
  • Cable length: 10' (3m)
  • Mount. gasket: Viton (G version only)
  • Classification: General purpose
  • CE compliance: EN 50082-2 immunity, EN 55011 emission
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Item #

Item Name

Sensor Range

Sensor Range

Sensor Size

Process Mount Type

Process Temperature

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N/A Discontinued Use LU28-01 or LU81-5101 N/A 16.4 ft. N/A 2 m N/A 2 inches N/A NPT N/A -40 to 160 °F Add To Cart
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N/A Discontinued Use LU28-11 or LU81-5161 N/A 16.4 ft. N/A 2 m N/A 2 inches N/A G N/A -40 to 160 °F Add To Cart
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N/A Discontinued Use LU28-01 N/A 26.2 ft. N/A 8 m N/A 2 inches N/A NPT N/A -40 to 160 °F Add To Cart
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N/A Discontinued Use LU28-11 N/A 26.2 ft. N/A 8 m N/A 2 inches N/A G N/A -40 to 160 °F Add To Cart
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N/A Discontinued Use LU29-01 N/A 32.8 ft. N/A 10 m N/A 2 inches N/A NPT N/A -40 to 160 °F Add To Cart
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N/A Discontinued Use LU29-51 N/A 32.8 ft. N/A 10 m N/A 2 inches N/A G N/A -40 to 160 °F Add To Cart
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