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Additional Information
The Sommer Messtechnik HSR-10 is designed for mobile and spontaneous flow velocity measurements in open water applications. Because it uses a contact-free radar method, the instrument avoids sensor fouling, reduces maintenance, and improves operator safety when measuring in difficult field conditions. It is especially useful for hydrologists, water agencies, emergency response teams, and field technicians who need rapid spot measurements without installing permanent equipment. Detects surface flow velocity using the Doppler frequency shift principle and displays readings in real time on an Android phone. Its portability, long battery life, and compatibility with the Makita 18V battery ecosystem make it a practical choice for extended field work and remote measurement campaigns.
Technical Data
HSR-10 Specifications
Portable Doppler radar technology provides non-contact surface velocity measurements without placing a sensor in the water.
| Velocity Measurement | |
|---|---|
| Measurement Type | Non-contact surface velocity measurement |
| Technology | Doppler radar |
| Practical Velocity Range | 0.08 to 16 m/s (0.26 to 52.5 ft/s), depending on water-surface conditions |
| Technical Velocity Range | 0.01 to 20 m/s (0.03 to 65.6 ft/s) |
| Accuracy | ±0.01 m/s; ±1% of full scale |
| Resolution | 1 mm/s (0.001 m/s) |
| Direction Recognition | Positive and negative flow direction |
| Measurement Duration | Approximately 10 seconds |
| Radar Frequency | 24 GHz, K-band |
| Distance to Water Surface | 0.5 to 100 m (1.6 to 328 ft) |
| Signal Processing | Sommer ANR advanced noise reduction with velocity-spectrum analysis |
| Measurement Quality | Internal measurement-quality value provided with every reading |
| Communication and Power | |
| Wireless Communication | Wi-Fi, 2.4 GHz |
| Wireless Range | Up to 50 m (164 ft) |
| Mobile Application | HSR-Commander for compatible Android devices |
| Power Supply | 9 to 18 VDC with reverse-polarity and overvoltage protection |
| Battery Compatibility | Compatible with Makita 18 V batteries (battery sold separately) |
| Battery Capacity | 2.0 Ah or 3.0 Ah |
| Charging Time | Approximately 2 hours |
| Environmental and Physical | |
| Protection Rating | IP65 |
| Operating Temperature | −40 to 60°C (−40 to 140°F) |
| Storage Temperature | −40 to 85°C (−40 to 185°F) |
| Relative Humidity | 0 to 100% |
| Instrument Dimensions | 263 × 123 × 271 mm (10.35 × 4.84 × 10.66 in), including battery |
| Instrument Weight | 1.2 kg (2.71 lb), plus approximately 0.6 kg (1.32 lb) for the battery |
| Carrying Case Dimensions | 480 × 380 × 190 mm (18.9 × 14.9 × 7.5 in) |
Practical measurement range depends on adequate movement and rippling of the water surface. Specifications are subject to change by the manufacturer.
Field Applications
Where the HSR-10 Can Be Used
The contact-free design makes the HSR-10 especially useful where entering the water would be difficult, unsafe, or impractical.
Hydrological Measurements
Perform rapid surface-velocity checks during hydrological surveys and field investigations.
Rivers and Streams
Measure surface velocity from bridges, riverbanks, and other safe observation points.
Open Channels
Investigate velocity conditions in canals, drainage channels, and other open conveyance systems.
Sewers and Drainage
Collect non-contact velocity measurements in accessible sewer and stormwater locations.
Flood Events
Obtain rapid measurements during high-water conditions, turbulent flows, and flood-response activities.
Water Management
Support field inspections, water-resource programs, and flow-condition assessments.
Hydropower
Check surface velocity near channels, waterways, and hydropower facilities.
Rapid Field Response
Suitable for river authorities, port authorities, emergency services, and rapid-response teams.
Standard Package
What’s Included
The HSR-10 is supplied as a portable field package for convenient transport, protection, and deployment.
- HSR-10 handheld non-contact radar instrument
- Charger for compatible Makita batteries
- Heavy-duty carrying case
- Three-point velocity calibration certificate
- Access to the HSR-Commander Android application
Product Resources
HSR-10 Documentation
Review the manufacturer’s technical documentation for operating instructions, measurement requirements, and complete specifications.
Learn more about the HSR-10 Surface Water Radar Flow Meter, Click on the link below to watch a video.
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What is the HSR-10 used for?
The HSR-10 is a handheld non-contact radar used to measure surface water velocity in rivers, streams, and open channels. It is designed for mobile field use and fast spot measurements without contacting the water.How does the HSR-10 measure flow velocity?
The HSR-10 uses Doppler radar technology to measure surface velocity by analyzing the frequency shift of radar waves reflected from the moving water surface.What are the benefits of a non-contact radar velocity meter?
A non-contact radar velocity meter allows safe measurements from above the water surface, reduces maintenance, avoids sensor fouling, and is ideal for difficult-to-access, high-velocity, or turbulent flow conditions.What is the measurement range of the HSR-10?
The HSR-10 offers a practical velocity range of 0.08 to 16 m/s and a technical range of 0.01 to 20 m/s, depending on water surface conditions.How accurate is the HSR-10 radar velocity meter?
The HSR-10 provides accuracy of ±0.01 m/s with ±1% full scale and a resolution of 1 mm/s.How long does a measurement take?
A typical HSR-10 measurement takes about 10 seconds, making it a fast solution for field velocity checks.How is the HSR-10 connected for viewing measurements?
The HSR-10 transmits data wirelessly via Wi-Fi and works with the HSR-Commander mobile app for setup, connection, and viewing measurement results.What comes with the HSR-10 bundle?
The HSR-10 bundle includes the handheld radar unit, a charger for Makita batteries, and a carrying case. Batteries are sold separately.What applications is the HSR-10 ideal for?
The HSR-10 is ideal for river studies, stream gauging, open channel flow checks, field inspections, and other mobile surface velocity measurement applications where fast, non-contact readings are needed.Does the HSR-10 require contact with the water?
No. The HSR-10 is a non-contact radar instrument, so it measures surface velocity without being submerged or touching the water.Still have questions about the HSR-10?
Contact AWM Instruments for recommendations, or application support.