The general purpose 6.3 GHz. pulse radar transmitter provides continuous level measurement up to 114.8’ (35m) 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 and petroleum storage or process applications in above grade metal or reinforced concrete tanks or below grade tanks of any material. Select this sensor for harsh process conditions with corrosive or low dielectric media, heavy surface foam or agitation, higher pressure, steam, condensation or vapor, and installation in a flange fitting. Due to the wider beam angle, special attention should be given to ensure that the sensor is located with unobstructed measurement space. Typical applications include process tanks.


  • 316L antenna with PTFE inner shield for corrosive media
  • Simple configuration via integral push button display module
  • 6.3 GHz. pulse radar is unaffected by most foam and agitation
  • 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
  • Auto-temperature compensation for accurate measurement
  • 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


P/N Description From
LR25-0310-40 4″ ANSI flange, 316L w/PTFE shield $2,595.00
LR25-0310-60 6″ ANSI flange, 316L w/PTFE shield $2,650.00


Select ultrasonic for chemicals and light weight oils; vibration for wastewater with light coating or scaling; buoyancy for clean water and non-coating chemicals.



Range: 12” to 114.8’ (30cm to 35m)

Frequency: 6.3 GHz.

Accuracy: ± 10mm

Dead band: 12” (30cm)

Beam angle: 20º

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 266º, C: -40º to 130º

Temp. comp.: Automatic

Storage temp.: F: -40º to 176º, C: -40º to 80º

Pressure: -14.5 to 580 psi (-1 to 40 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: – 40: 4” flange (ANSI), – 60: 6” 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.