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EchoPulse® LR20 Radar Liquid Level Sensor Transmitter

The general purpose 26 GHz. pulse radar level transmitter provides continuous level measurement up to 65.6’ (20m) with a 4-20 mA signal output, and is configured via its integral push button display module. 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
Simple configuration via integral push button display module
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
Fail-safe diagnostics with selectable signal fail-safe outputs
Recognition, storage and rejection of false echo signal returns
Rugged IP67 aluminum enclosure with polycarbonate window



Data Sheet | Quick Start | Manual | 3D Model | Brochure



Range: 12” to 65.6’ (30cm to 20m)
Frequency: 26 GHz.
Accuracy: ± 3mm
Dead band: 12” (30cm)
Beam angle: – 30: 12º, – 40: 8º
Configuration: Push button
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: 16-26 VDC
Max. consumption: 22.5 mA
Signal output: 4-20 mA, two-wire
Signal invert: 4-20 mA, 20-4 mA
Signal fail-safe: 3.9 mA, 20.5 mA, 22 mA
Process temp.: F: -40º to 302º, C: -40º to 150º
Temp. comp.: Automatic
Storage temp.: F: -40º to 176º, C: -40º to 80º
Pressure: -14.5 to 72 psi (-1 to 5 bar)
Enclosure rating: IP67
Encl. material: Aluminum w/silicone gasket
Encl. window mat.: Polycarbonate
Conduit entrance: (1) 1/2” NPT connector, (1) M20 x 1.5 plug
Antenna material: 316L w/PTFE inner shield
Process mount: – 30: 3” flange (ANSI), – 40: 4” flange (ANSI)
Classification: General purpose
Certification: cTUVus, FCC
Compliance: CE, CRN, RoHS




If you want help in selecting a sensor for your application, please submit a Level Questionnaire. An engineer will review your requirements and suggest a product solution via email.



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