• EchoPro® LR21 Pulse Radar Liquid Level Transmitter





    The intrinsically safe 26 GHz. pulse radar transmitter provides continuous level measurement up to 65.6’ (20m) with a 4-20 mA analog and HART digital signal output, and is configured via its integral push button display module or WebCal software. The non-contact liquid level sensor is intended for chemical storage or process applications in above or below grade tanks of any material. Select this sensor for challenging process conditions with corrosive media, light surface foam or agitation, higher temperature or pressure, condensation or vapor, and installation in a flange fitting. Typical applications include bulk storage and process tanks.


    316L antenna with PTFE inner shield for corrosive media

    Configuration via push button display or WebCal software

    26 GHz. pulse radar is unaffected by vapor or condensation

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

    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

    Fail-safe diagnostics with selectable signal fail-safe outputs

    Recognition, storage and rejection of false echo signal returns

    IP67 stainless enclosure with polycarbonate display window



    Range: 12" to 65.6" (30cm to 20m)
    Frequency: 26 GHz.
    Accuracy: ± 3mm
    Dead band: 12" (30cm)
    Beam angle: -30: 12°, -40: 8°
    Configuration: Push button, WebCal® PC Windows® USB® 2.0; HART 7
    Memory: Non-volatile
    Display type: LCD, dot matrix
    Display units: Feet and meters
    Display bar: Percent of span
    Display graph: Echo signal curve
    Supply voltage: 21.6 to 26.4 VDC
    Max. consumption: 22.5 mA
    Signal output: 4-20 mA, two-wire, HART 7
    Signal invert: 4-20 mA, 20-4 mA
    Signal fail-safe: 3.9 mA, 20.5 mA, 22 mA
    Process temp.: F: -40° to 302° 
    C: -40° to 150°
    Temp. comp.: Automatic
    Storage temp.: F: -40° to 176° 
    C: -40° to 80°
    Pressure: -14.5 to 72 psi (-1 to 5 bar)
    Enclosure rating: IP67
    Encl. material: 316L stainless stell w/silicone gasket and PBT FR neck
    Encl. window mat.: Polycarbonate
    Conduit entrance: (1) 1/2" NPT connector 
    Antenna material: 316L w/PTFE inner shield
    Process mount: -30: 3'' flange (ANSI), -40: 4'' flange (ANSI)
    Classification: Intrinsically safe
    Certification: FCC
    Compliance: CE, CRN, RoHS