Wireless Battery-Operated Non-Contact Radar Area/Velocity Flowmeter for Open Channel Flow Monitoring

We are proud to launch our new non-contact radar area and velocity flow meter that delivers accurate and reliable data while eliminating the need for field maintenance.

When combined with our Atrax monitoring solution and our SpiderMesh communication protocols, the Raven Eye becomes the most powerful non-contact open channel flow monitoring solution on the market.

Advantages of utilizing our low power open channel radar flow meter

A contactless solution that eliminates the need for maintenance and reduces site visits and confined space entries.
A connected solution for true real-time monitoring that enables you to react in real time to critical events.
A custom alarm system that works for you!
High accuracy, even in low flow conditions.
Internal diagnostic capability to monitor & report on the health of the system.
Self-calibrating eliminates the need for field calibration.
Applications: CSO SSO monitoring, inflow and infiltration analysis, custody transfer billing & catchment /drainage area modeling.

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Our turnkey solutions for Inflow and Infiltration

We provide a comprehensive suite of hardware, software, monitoring, and integrated solutions tailored to meet specific industry challenges. Our offerings pave the way to more intelligent water management by establishing an actionable system.

Non contact radar velocity flow meter


The Flowtronic RAVEN-EYE® is an advanced non-contact radar and velocity flow meter that provides accurate and reliable data while eliminating the need for field maintenance. When paired with our Atrax monitoring solution, it creates a robust real-time, wireless flow and level monitoring solution for various applications, including CSO/SSO Monitoring and Inflow, and Infiltration.

More details about our solution

Accurate flow measurement
Portable or stationary version available
Non-contact: the sensor is above the water surface
Easy installation
Robust IP68 (PU) enclosure
Totally sealed sensor: no joints, seals or screws
Developed for field applications
Velocity distribution analysis & self-learning technology for average velocity calculation
For channels from 100 mm and upwards
Easy integration with SCADA, PLC or telemetry systems
Direct RS485 interface available

One 4-20 mA configurable output
Perfect solution for difficult flow conditions: high solids content, high temperature, shallow and caustic flows, high velocities and large open channels
No maintenance
Auto-diagnostic system


Sewer/Channel Networks Monitoring

Large sewer channels
Capacity studies
Combined sewer overflow (CSO) studies
Inflow & infiltrations studies
High velocity flows

Wastewater Treatment Plants

Flow to treatment
Plant effluent
Storm discharge
Process flow control

Rivers, Channels & Irrigation

Stormwater monitoring & compliance
Climate & hydraulic engineering
Stormwater basins calculations
Permanent measurements of surface water

How our monitoring solution stands out

Easy Installation

No trenching, with Smartrek there is no need to dig trenches and bring antennas above ground, this makes for a quick and easy installation. Additionally, our sensors are above the water (when compared to submerged sensors), so they won’t get obstructed by debris and sediments, minimizing the maintenance required and the confined space entries by utility workers to clean the sensors.


Our sensors and nodes provide autonomy for a period of 2 years with a reading every 15 minutes, again minimizing the need for confined space entry and expensive battery replacement.

Reliable connectivity

Using SpiderMsh, our proprietary radio mesh technology, we have the ability to deploy a custom network connecting seamlessly all your devices. We can guarantee the quality of the connectivity, giving you high-quality data and real-time monitoring

Data management

Using our cloud-based app, you’ll be able to visualize real-time data and extract raw data for advanced analytics. Our alarm system will alert you when unwanted events happen, based on the custom parameters you will determine. Easy and quick integration into your existing SCADA system is also possible.

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