EchoPro® LR41 Pulse Radar Solids 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 316L stainless steel antenna and process mount

Configuration via push button display or WebCal software

Gimbal flange for easy positioning with the angle of repose

Antenna air-purge for use with significant dust conditions

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

HART communication in point to point and multi-drop modes

Optional display mode indicates the echo signal return curve

Fail-safe diagnostics with selectable signal fail-safe outputs

PTFE antenna cover for use with moderate dust conditions

Recognition, storage and rejection of false echo signal returns

IP67 stainless enclosure with polycarbonate display window



Range: 12" to 229.7" (30cm to 70m)
Frequency: 26 GHz.
Accuracy: ± 15mm
Dead band: 12" (30cm)
Beam angle: -5_21-4: 8º, -5_21-5: 6º
Configuration: Push button; WebCal® PC Windows® USB® 2.0; HART 7
Memory: Non-volatile
Display type: LCD, not matrix
Display units: Feet and metres
Display bar: Percent of span
Display graph:

Echo signal curve

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 752° 

C: -40° to 400°

Temp. comp.: Automatic
Storage temp.:

F: -40° to 176° 

C: -40° to 80°

Pressure: Atmospheric
Enclosure rating: IP67
Encl. material: 316L stainless steel w/silicone gasket
Encl. window mat: Polycarbonate
Conduit entrance: (1) 1/2'' NPT connector
Antenna material: -5_21-4/5: 316L, -5_21-A/B: 316L & PTFE
Process mount: 1/4” (6.3mm) I.D. tubing
Classification: Intrinsically safe
Certification: FCC
Compliance: CE, RoHS


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