| 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.
Ideal for use in:
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