LR25 Series

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LR25 Series

EchoPulse® Radar Level Transmitter LR25 Series

EchoPulse® Radar Level Transmitter


The Flowline EchoPulse® LR25 Series 6 GHz radar transmitter provides continuous level measurement up to 114.83' (35 m) with a 4-20 mA signal output and is configured via its integral push button display menu. The LR25 Series non-contact liquid level sensor with PTFE coated stainless steel horn is ideally suited for liquid level applications of aggressive chemicals, and higher temperature or pressure liquids.


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  • Continuous, non-contact level measurement for liquids, pulps and slurries
  • Measurement not affected by wave action
  • Measurement minutely addected by temperature changes, powders or vapors
  • Max measurement range: 114.83' (35 m)
  • Process pressure up to 580 psi
  • 2-wire technology with 4-20 mA
  • Storage and recognition system for false echo signals

Supply Voltage: 16 to 26 VDC @ 22.5 mA

Accuracy: ± 10 mm

Signal Output:4-20 mA @ 461Ω (loop powered)

Frequency: 6.3 GHz

Fail Safe: 20.5 mA, 22 mA, or 3.9 mA

Deadband: 12″ (30 cm)

Beam Angle: 20° - 4″ and 6″ ANSI flange

Range: 114.83' (35 m)

Pressure: -14.5 to 580 psi

Process Temperature: -40° to 266℉ (-40° to 130℃)

Ambient Temperature: -40° to 212℉ (-40° to 100℃)

Operating Humidity:<95%

Cable Connect: Sandard 2-wire cable with outside diameter of 5-9 mm

Cable Entrance:One cable entry 1/2" NPT

 : One binding if 1/2" NPT

Antenna: 316 L

Flange: 316 L w/ PTFE cover

Seal: Viton

Seal Ring: Silicone

Window: Polycarbonate

Ground Terminal:Stainless steel

Enclosure: Aluminum

Approvals: cTUVus, FCC (Part 15.209), CE, GP, CRN registered, RoHS

Weight: 6.61 lbs (3 Kg)

Warranty: 1 year