• EchoSonic® LU23-29 Ultrasonic Level Transmitter with Conduit




    The general purpose ultrasonic level transmitter provides continuous level measurement up to 32.8' (10m) with a 4-20 mA signal output, and is configured via our free Webcal software. This non-contact liquid level sensor is ideally suited for corrosive, ultrapure, sticky or dirty liquids, and is broadly selected for bulk storage, day tank, lift station and process tank level applications.


     Offered in 4 measurement ranges from 9.8' (3m) to 32.8' (10m)

     DSP auto adaptive filters enable plug & play operation optimizing signal output filtering & obstacle recognition

     Configuration is fast and easy via WebCal software and USB adapter

     Narrow 2" or 3" beam width for applications with limited measurement space

     Short 4" or 8" dead band maximizes the measureable filling capacity of the tank

     PVDF transducer and NEMA 4X polycarbonate enclosure for corrosive liquids

     Automatic temperature compensation for accurate measurement


    Range: LU27: 4" to 9.8' (10cm to 3m) 
    LU23: 8" to 18.0' (20cm to 5.5m) 
    LU28: 8" to 24.6' (20cm to 8m) 
    LU29: 8" to 32.8' (20cm to 10m)
    Accuracy: ± 0.2% of range
    Resolution: LU27: 0.019" (0.5mm)
    LU23: 0.039" (1mm) 
    LU28/29: 0.079" (2mm)
    Dead band: LU27: 4" (10cm)
    LU23/28/29: 8" (20cm)
    Beam width: LU27: 2" (5cm)
    LU23/28/29: 3" (7.6cm)
    Configuration: WebCal® PC 
    Windows® USB 2.0
    Memory: Non-volatile
    Supply voltage: 24 VDC (loop)
    Consumption: 0.5W
    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: -4° to 140°
    C: -20° to 60°
    Temp. comp.: Automatic
    Ambient temp.: F: -31° to 140°
    C: -35° to 60°
    Pressure: MWP = 30 PSI (2 bar)
    Enclosure rating: NEMA 4X (IP65)
    Encl. material: Polycarbonate
    Trans. material: PVDF
    Cable jacket mat: Polyurethane
    Cable type: 4-conductor, shielded
    Process mount: LU27: 1" NPT (1" G)
    LU23/28/29: 2" NPT (2" G)
    Mount gasket: Viton®
    Classification: General purpose
    Compliance: CE, RoHS
    Approvals: cFMus