Available from Q1 2026

FX100

High-precision Non-contact Open Channel Flow Meter

The Geolux FX100 is an integrated instrument utilizing advanced FMCW 4D surface velocity radar and FMCW water level radar meter. Designed for non-contact measurement applications, the FX100 enables rapid deployment above water surfaces while minimizing maintenance requirements.
The FX100 is based on the advanced 4D radar processing that delivers superior performance compared to conventional Dopplerbased surface velocity radars. While traditional Doppler sensors are susceptible to measurement degradation from ambient interference, precipitation, and structural vibration, the FX100’s signal processing architecture ensures consistent, high-accuracy velocity measurements under all environmental conditions.
Calculation of the total flow discharge is internally implemented within the instrument by combining surface velocity measurement, water level measurement, and a configured cross-section of the river or channel. Defining the measurement parameters such as profile cross-section, material of the edges, location of the sensor above the water, and all other instrument settings can be easily set with the Geolux configuration application using any available communication interface. 

ParameterModel
FX100
Application Hydrology and Flood Monitoring
x
Application Wastewater and Industrial Monitoring
x
Application Irrigation Monitoring
x
Application Snow Monitoring
x
Application Coastal and Ocean Monitoring
x
Application Meteorology
-
Distance Detection
15m/30m/35m
Speed Range
0.02 m/s to 16 m/s
Speed Resolution
0.001 m/s
Speed Accuracy
1% of measured value
(in full measurement range)
Level Resolution
1 mm
Level Accuracy
± 2 mm
Sampling Rate
1 sps
IP Rating
P68
Interfaces
RS-232 / NMEA
RS-485 / Modbus RTU
SDI-12
Connector Type
M12 circular 12-pin
Cable
10 m cable included
Input Voltage
9 to 27 VDC
Power Consumption
1100 mW operational
30 mW standby
Maximal Current
< 750 mA
Operating Temperature Range
-40°C to +85°C
Operating Humidity Range
0 – 100% RH
  • Contactless measurement of surface velocity and water level
  • Integrated discharge (flowrate) calculation
  • 4D radar processing increases sensitivity while eliminating environmental disturbances
  • Robust, compact, IP68 aluminium or stainless steel enclosure