Fluvia RC3Fluvia RC3Fluvia RC3Fluvia RC3
Fluvia RC3

Fluvia RC3

The FLUVIA RC3 Electromagnetic Water Velocity Meter is a portable instrument designed for accurate measurement of water velocity and flow in natural and engineered hydraulic systems. Its intuitive user interface enables fast and reliable field measurements with…  Read more

Probe RV4

Sensor technology Hydrodynamically shaped electromagnetic submersible probe w/ stainless steel electrodes.
Accuracy 1 % max reading + zero stability
Long-term stability Typically, ± 0.01 m/s, max ± 0.03 m/s
Range 0 … 3 m/s
Measurement cycle 0.5 seconds
Calibration Control on 14 points, calibrated for life if maintained correctly
Probe housing Probe body yellow epoxy resin cast | probe tail end stainless steel
Dimensions/weight 158 x 50 x 19 mm | ~6.220 x ~1.969 x ~0.748 inch/0.1 kg | ~0.221 lbs (no cable)
Cable length 3 m | ~9.84 ft, 6 m | ~19.69 ft polyurethane-sheathed cable.
Additional lengths available upon request.


Controller/handheld unit

Environmental rating IP67
Dimensions/weight 191 x 126 x 60 mm | ~7.519 x ~4.961 x ~2.362 in/ 1.2 kg | ~2.645 lbs with batteries
Operating temperature -20 … +60 °C | -4 … +140 °F
Battery type Lithium-ion, rechargeable
Battery life Standard 20hrs continuous usage (30hrs with reduced backlight)
Note: battery life depends on usage and screen brightness
Battery charger AC wall outlet charger, 230 V AC / 110 V AC
PC interface RS-232, optional USB-to-RS232 interface adapter
Display Colour, LCD, touchscreen, 5”
User interface navigation Waterproof, 25 mm (~0.984 in) diameter dial/push button
Data storage Manual or automatic 12000 data points + 32 river profiles + 30 vertical sections
Units of measurement Velocity m/s, mm/s, ft/s
Discharge m3/s, m3/h, m3/d, l/s, l/h, l/d


Wanding rod

Sections Stainless steel 3x or 6x modular cylindrical sections + 1x disc at the base + 1x adjustable
probe holder, 1x synthetic handle
Note: can be extended in increments of 50 cm using additional optional sections.
Dimensions/Weight 3 x 500 mm = 1.5 m, 3 kg | 3 x ~19.685 in = ~59.055 in, ~6.614 lbs
6 x 500 mm = 3 m, 6 kg | 6 x ~19.685 in = ~118.110 in, ~13.228 lbs
Complimentary accessory Canvas carrying bag


Other

Compliance CE, RoHS
Case dimensions 464 x 366 x 176 mm | ~18.268 x ~14.409 x ~6.929 in
Net weight complete case 5 kg | ~11.023 lbs with FLUVIA and its probe, without wading rod

The FLUVIA RC3 Electromagnetic Water Velocity Meter is a portable instrument designed for accurate measurement of water velocity and flow in natural and engineered hydraulic systems.
Its intuitive user interface enables fast and reliable field measurements with minimal operator training. The hydrodynamic probe design and compact sensor size allow precise measurements close to the water surface, near the channel bed, or along pipe walls. As the sensor contains no moving parts, it is immune to debris accumulation, ensuring long-term accuracy and operational reliability.
The system is fully configurable to user requirements, including measurement units, date and time, language, and data logging methods. An optional GPS module automatically synchronizes time and records precise geolocation for each measurement point.

Configuration

All system functions are quickly and easily configured via a menu-driven interface. Users can define unit systems, time-averaging filters, and recording preferences.

Readings, Logging and Visualisation

The instrument delivers real-time water velocity measurements with integrated time stamps for full traceability. Data acquisition supports both manual and automatic recording modes, enabling adaptation to specific field conditions. An adjustable zero offset optimizes accuracy and compensates for site-specific effects. Measurements are displayed graphically, with velocity trends shown over a user-defined time window to allow immediate assessment of flow stability and measurement quality in the field.

River Profiling and Discharge Calculation

The system automatically calculates flow and discharge from channel geometry, water level, and multiple velocity points, delivering reliable results across diverse hydraulic conditions. Discharge calculations comply with ISO 748 standards. For river profiling, surveys support up to 30 verticals with up to 6 velocity points each, with all profiles stored internally and available for export for further analysis.

  • Electromagnetic velocity sensor independent of temperature variations, water density changes, sediment load, and turbidity
  • IP67-rated housing for field deployment
  • Data logging capacity of up to 12,000 measurement points
  • Multilingual interface (English, French, German, Dutch, Danish, Spanish, Turkish)
  • Optional modules: see accessories on p. 2.

Ideal for use in:

  • Rivers and streams
  • Irrigation canals
  • Water conveyance channels
  • Open channels