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LX-80 Radar Level Sensor


Product Highlights

  • Contactless water level measurement

  • The narrowest beam measurement angle on the market (2.5°)

  • RS-232, RS-485 Modbus, SDI-12, analog 4-20 mA interfaces in all models

  • Remote configuration of all instrument parameters through any digital communication interface

  • Robust small size IP68 aluminum or stainless steel enclosure


  • Water level monitoring for rivers, channels and lakes

  • Early flood warning

  • Water reservoir monitoring and irrigation control

  • Observing the level of various fluids in the chemical industry

  • Fluid and solid level tracking in the  food industry

  • Monitoring levels in waste water, industrial applications, and tanks


Product Description

Geolux LX-80 series of instruments are advanced contactless radar level meters designed for precise distance measurement from the instrument to the surface of the various fluids.

This functionality is achieved by transmitting an electromagnetic wave in 80 GHz frequency range (W band), and measuring the frequency shift of the electromagnetic wave reflected from the water surface. Instruments are characterised by low power consumption, supported by multiple communication interfaces, compatible with Geolux and third-party dataloggers, and support remote configuration of all instrument settings over any available digital communication interface. Narrow beam width of only 5° allows for simpler installation, and that nearby structures such as bridge railings or pillars do not interfere with the accuracy of the water level measurement.

Detailed Specifications

General specifications

Radar Type                           W-band 77-81 GHz FMCW radar

Beam Angle                          5°

Detection Distance               8 m / 15 m / 30 m

Resolution                             0.5 mm

Accuracy                               +/- 2 mm

Sampling Frequency             1 sps / 10 sps optional

IP Rating                                IP68


Serial Interface             1 x serial RS-485 half-duplex
                                      1 x serial RS-232 (two wire interface)

Serial Baud Rate           9600 bps to 115200 bps

Serial Protocols             Modbus, GLX-NMEA

Analog Interface           4-20 mA

Other Interfaces            SDI-12

Electrical & Mechanical

Connector                             M12 circular 12 -pin

Input Voltage                        9 to 27 VDC

Power Consumption            0.36 W; standby 0.15 W; sleep 0.03 W; extended 0.6 W
Maximal Current                  < 470 mA

Temperature Range             -40 °C to +85 °C (without heating or coolers)

Enclosure Dimensions         Φ 65 mm x H 78 mm


EN 61326-1:2013
ETSI EN 301 489-1
ETSI EN 301 489-3
EN 62368-1:2014+A11:2007;
EN 60950-22:2017
EN 61010-1:2010

FCC Part 15 class B


Mechanical Drawing

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