LX80-Series

LX-80 Water Level Radar Sensor

Name: LX-80 Water Level Radar Sensor
SKU: LX80-Series

The Geolux LX80 instruments are a cutting-edge solution for contactless radar-based water level measurement. Operating in the 80 GHz frequency range (W band), the LX80 instruments transmit modulated electromagnetic waves and measure the frequency shift of the waves reflected from the water surface. The measured freqeuncy shift accurately corresponds to the distance between the instrument and the water surface, which the instrument reports.

Request a quote Download the datasheet

Features

Contactless, highly accurate, water level measurement.
Narrowest beam measurement angle on the market (5°).
RS-232, RS-485 Modbus, SDI-12, and analog 4-20 mA interfaces included in all models.
Remote configuration of all instrument parameters through any digital communication interface.
Robust, small-sized IP68 aluminum or stainless steel enclosure.

Description

The LX80 is engineered for low power consumption, making it suitable for remote and long-term deployments. It offers multiple communication interfaces, including RS-232, RS-485 Modbus, SDI-12, and analog 4-20 mA, ensuring compatibility with both Geolux and third-party dataloggers. Additionally, all instrument settings can be remotely configured via any available digital communication interface, allowing remote reconfiguration of the instrument’s operating parameters.

A key feature of the LX80 is its exceptionally narrow beam width of just 5°. This focused beam allows for simpler installation and ensures that nearby structures, such as bridge railings or pillars, do not interfere with the accuracy of the water level measurement. It also allows for installation in existing stilling well structures.

The instrument is designed for continuous non-contact water level monitoring in hydrological networks according to WMO-No. 168.

Specifications

Parameter/Model	LX80-8	LX80-15	LX80-30	LX80-50
Measuring Range	8.0 m	15.0 m	30.0 m	50.0 m
Application Hydrology and Flood Monitoring	x	x	x	x
Application Wastewater and Industrial Monitoring	x 1	x 1	x 1	-
Application Irrigation Monitoring	x	x	x	x
Application Snow Monitoring	-	-	-	-
Application Coastal and Ocean Monitoring	x	x	x	x
Application Meteorology	-	-	-	-
Antenna Beam	5° (±2.5°)	5° (±2.5°)	5° (±2.5°)	5° (±2.5°)
Accuracy	±1.0 mm	±1.0 mm	±1.0 mm	±2.0 mm
Blind Zone	0.2 m	0.2 m	0.2 m	0.2 m
Frequency Range	80GHz W-band	80GHz W-band	80GHz W-band	80GHz W-band
Radar Type	FMCW	FMCW	FMCW	FMCW
Enclosure Material	Anodized aluminium / Stainless steel (optional)	Anodized aluminium / Stainless steel (optional)	Anodized aluminium / Stainless steel (optional)	Anodized aluminium / Stainless steel (optional)
Mounting	M65 thread + nut 2	M65 thread + nut 2	M65 thread + nut 2	M65 thread + nut 2
Sampling Rate	1 Hz	1 Hz	1 Hz	1 Hz
RS-232	x	x	x	x
RS-485 Modbus/RTU	x	x	x	x
SDI-12	x	x	x	x
Analog 4-20mA	x	x	x	x
4-20mA live-zero signalling	x	x	x	x
Temperature Range	-40°C to +85°C	-40°C to +85°C	-40°C to +85°C	-40°C to +85°C
Relative Humidity Range	0 - 99% non-condensing	0 - 99% non-condensing	0 - 99% non-condensing	0 - 99% non-condensing
Protection Class	IP68	IP68	IP68	IP68
Input Voltage	9 to 29 VDC 3	9 to 29 VDC 3	9 to 29 VDC 3	9 to 29 VDC 3
Connector Type	M12 circular 12-pin	M12 circular 12-pin	M12 circular 12-pin	M12 circular 12-pin
Cable	10 m cable included	10 m cable included	10 m cable included	10 m cable included
Power Consumption	0.36 W - operating mode 0.15 W - standby mode 0.03 W - sleep mode 0.6 W - extended operating mode	0.36 W - operating mode 0.15 W - standby mode 0.03 W - sleep mode 0.6 W - extended operating mode	0.36 W - operating mode 0.15 W - standby mode 0.03 W - sleep mode 0.6 W - extended operating mode	0.36 W - operating mode 0.15 W - standby mode 0.03 W - sleep mode 0.6 W - extended operating mode
Maximal Current	< 470 mA	< 470 mA	< 470 mA	< 470 mA
Enclosure Dimensions	Φ 65 mm × H 78 mm	Φ 65 mm × H 78 mm	Φ 65 mm × H 78 mm	Φ 65 mm × H 78 mm
Weight (without cable)	500 g – anodized aluminium enclosure 1200 g – stainless steel enclosure	500 g – anodized aluminium enclosure 1200 g – stainless steel enclosure	500 g – anodized aluminium enclosure 1200 g – stainless steel enclosure	500 g – anodized aluminium enclosure 1200 g – stainless steel enclosure

1 Stainless steel enclosure recommended in highly corrosive environments. 2 Nut matching material of the enclosure is shipped together with the sensor. 3 On the instrument input (10 m factory-provided cable). In case of longer cables, ensure the voltage at the instrument input remains within the specified range even during current peaks.

Gallery

Configure the instrument

Choose the model, probes and accessories. Incompatible combinations are blocked as you go; the remaining rules are checked when the instrument is added to the quote.

Documents

HydroCam-Series
HydroCam
The Geolux HydroCam is a 5-megapixel camera designed for remote visual inspection of hydrological monitoring sites. It offers multiple communication…
CTD100
Conductivity – Temperature – Depth Sensor (CTD100)
CTD100 is a pressure-type hydrological and water quality measuring instrument with good stability, high precision, low power consumption, small size…
HydroStation-Series
Geolux HydroStation
The Geolux HydroStation is a compact, automated hydrological monitoring station designed to provide seamless integration of hydrological instruments…
GLX_AIRQ
AX500 Air Quality sensor (GLX_AIRQ)
The Geolux AX500 (powered by SmartSense) is a rugged air quality sensor designed for precise detection and measurement of five key atmospheric gases…
RSS-2-300WL-Series
RSS-2-300WL Flow Meter
The Geolux RSS-2-300WL is the flagship product of Geolux. It is an instrument that combines surface velocity and water level measurement with an…
FX200-30
FX200 Flow Meter - 30 m (FX200-30)
Product Description The Geolux FX200 is an integrated instrument utilizing advanced FMCW 4D surface velocity radar and FMCW water level radar meter…
LX80-O-Series
LX-80-O Wave & Tide Radar Sensor
Geolux LX80-O oceanographic radar sensor stands out as a cutting-edge solution for measuring tidal sea levels and wave parameters from coastal and…
RSS-2-300W-Series
RSS-2-300W Surface Flow Velocity Meter
The Geolux RSS-2-300W is a highly sensitive Doppler radar sensor designed for the contactless measurement of surface flow velocity. Operating in the…
HydroTemp-Series
HydroTemp
The Geolux HydroTemp is a scientific-grade temperature sensor designed for precise measurement of water, liquid, or soil temperatures. Available as…
SmartObserverPlus-Series
SmartObserverPlus Data Logger
The Geolux SmartObserverPlus is a powerful datalogger designed specifically for environmental monitoring applications.
RG-Series
RG Tipping Bucket Rain Gauge
The Geolux RG200 and RG400 are precision-engineered tipping bucket rain gauges, designed for long-term reliability and accuracy in demanding…
FX100-30
FX100 Flow Meter - 30 m (FX100-30)
The Geolux FX100 is an integrated instrument utilizing advanced FMCW 4D surface velocity radar and FMCW water level radar meter. Designed for…