• EchoPro® LR31 Pulse Radar Liquid Level Transmitter





    The intrinsically safe 26 GHz. pulse radar transmitter provides continuous level measurement up to 98.4’ (30m) with a 4-20 mA analog and HART digital signal output, and is configured via its remote push button display module or WebCal software. The non-contact liquid level sensor is intended for industrial wastewater, municipal storm or sewer lift station, reservoir, river, canal or open channel applications located below or above grade. Select this sensor for challenging process conditions that may include light surface foam or agitation, small trash or plant material, wind, condensation or vapor. Each comes with a 32.8’ (10m) cable, mounting bracket and display module. The sensor is designed for bracket mount installation suspended above the liquid level.


    Rugged IP68 sensor enclosure with 304 SS mounting bracket

    Configuration via push button display or WebCal PC software

    26 GHz. pulse radar is unaffected by sump process conditions

    Wall mounted display with windowed enclosure rated IP67

    12” (30cm) dead band enables utilization of the entire sump

    LCD displays level in feet or meters with percent of span bar

    Optional display mode indicates the echo signal return curve

    HART communication in point to point and multi-drop modes

    Auto-temperature compensation for accurate measurement

    Self diagnostics with selectable fail-safe signal outputs

    Recognition, storage and rejection of false echo signal returns



    Range: 12" to 98.4" (30cm to 30m)
    Frequency: 26 GHz.
    Accuracy: ± 3mm
    Dead band: 12" (30cm)
    Beam angle: 12°
    Supply voltage: 21.6 to 26.4 VDC
    Max consumption: 22.5mA
    Signal output: 4-20mA, two-wire, HART 7
    Signal invert: 4-20mA, 20-4mA
    Signal fail-safe: 3.9mA, 20.5mA, 22mA
    Process temp.:

    F: -40° to 212° 

    C: -40° to 100°

    Temp. comp.: Automatic
    Pressure: Atmospheric
    Enclosure rating: IP68
    Encl. material: Nylon
    Cable type: 6-conductor, shielded
    Cable length: 32.8' (10m)
    Cable jacket mat: PVC
    Process mount: 304 SS bracket or 1'' NPT DISPLAY
    Display type: LCD, dot matrix
    Display units: Feet and meters
    Display bar: Percent of span
    Display graph: Echo signal curve
    Configuration: Push button, WebCal® PC Windows® USB® 2.0; HART 7
    Enclosure type: Wall mount
    Enclosure rating: IP67
    Encl. material: Polycarbonate
    Conduit entrance: (2) 1/2" NPT connector 
    Memory: Non-volatile
    Storage temp.:

    F: -40° to 176° 

    C: -40° to 80°

    Classification: Intrinsically safe
    Certification: FCC
    Compliance: CE, RoHS