HyFlow Inc. — Acoustic Doppler Flow Measurement Systems

Voyager Series

One instrument. Every environment.

Dual-frequency, 9-beam architecture that adapts from shallow streams to deep water. The Voyager DF9 is the only profiler you need.

Voyager DF9 acoustic Doppler current profiler — side view with product label

Voyager Series

Voyager DF9

600 kHz + 2 MHz · 9 Beams

Dual-frequency flagship profiler with 9 acoustic beams. One instrument for shallow-to-deep measurements. No need to carry multiple profilers.

Dual frequency 80 m range 9 beams

9

Acoustic Beams

2

Frequencies (600 kHz + 2 MHz)

80 m

Profiling Range

0.25%

Velocity Accuracy

100 m

Depth Profiling Range

600 kHz

Center Beam Frequency

Download datasheet ↓ Learn more →

Our Technology

Acoustic Doppler Current Profiling

1

The Doppler Effect

Sound frequency changes when source and receiver move relative to each other. The frequency shift is directly proportional to velocity, a principle discovered in 1842 and now the foundation of modern flow measurement.

2

How ADCPs Work

HyFlow instruments emit acoustic pulses into the water. Particles like sediment, plankton, and air bubbles reflect echoes back. The instrument measures the Doppler shift in these echoes to calculate water velocity at each depth.

3

Why It Matters

Non-intrusive, no moving parts, simultaneous velocity measurement across the full water column. ADCP technology is the gold standard for streamflow monitoring worldwide.

Applications

Trusted across disciplines

From research expeditions to regulatory compliance, Voyager instruments support the full spectrum of flow measurement applications.

Oceanography

Current profiling, ocean circulation studies, and coastal process monitoring

River Discharge

Stream gauging, flood monitoring, and water resources assessment

Irrigation & Agriculture

Canal flow measurement, water rights compliance, and deficit irrigation management

Regulatory Compliance

Water measurement reporting, SB 88 compliance, and environmental permitting

Renewable Energy

Offshore wind and tidal site characterization with wave and current data

Academic Research

University-grade instrumentation for hydrology and marine science programs

Environmental Monitoring

Long-term ecosystem assessment and environmental impact studies

Vessel-mounted Surveys

Mobile discharge measurements and bathymetric profiling from boats

In the Field

Proven where it matters

From vessel-mounted river surveys to coastal deployments, the Voyager DF9 delivers reliable data in real-world conditions.

Deploying the Voyager DF9 on a catamaran float from a survey vessel

Deploying the Voyager DF9 for a river discharge survey

Equipment setup on deck with the DF9 mounted on a catamaran platform

Survey preparation — DF9 on catamaran platform

HyFlow engineer analyzing real-time velocity profiles on a survey vessel

Real-time data analysis during a vessel-mounted survey

Bridge-based river discharge measurement with remote-controlled ADCP

Software Platform

Modern software for modern instruments

Every Voyager system ships with HyFlow's cross-platform data analysis software, a ground-up redesign of how ADCP data processing should work. Faster workflows, cleaner visualizations, and seamless data export.

Unlike legacy ADCP software that's locked to Windows, HyFlow runs natively on Windows and Linux with a modern interface built for today's research workflows.

Windows

Linux

CSV Export

No License Fees

Platform Vision

From sensor to cloud

An integrated platform designed from the ground up for connected water monitoring.

Voyager Hardware

ADCP sensors with proven acoustic Doppler technology

● Shipping

Desktop Software

Cross-platform data analysis for Windows & Linux

● Beta

Edge Computing

Real-time processing at the sensor for automated gauging

○ On Roadmap

Cloud Platform

Data visualization, storage, and automated analytics

○ On Roadmap

About HyFlow

Built in Silicon Valley for the world's water

HyFlow Inc. is a Silicon Valley based technology company that designs integrated acoustic Doppler instrumentation and data analysis software for streamflow and current measurement. We bring Silicon Valley's engineering culture to an industry that's ready for it: rapid innovation, modern software design, and a relentless focus on user experience.

When you work with HyFlow, you're working directly with the engineers who design, build, and support your instruments. No layers of distribution. No ticket queues. Just direct access to the people who care most about your success.

Integrated Systems

Hardware and software designed together, not bolted on as an afterthought.

Modern Software

Cross-platform, cloud-ready architecture built for today's data workflows.

Direct Support

Founder-led engineering support. Talk to the people who designed your instrument.

Open Standards

No vendor lock-in: standard data formats, CSV export, and cross-platform compatibility.

Precision flow measurement meets modern software