Radar-ultrasonic
Integrated flow meter
The HKI 305 radar-ultrasonic integrated flow meter is an in-house online flow instrument for urban storm/sewage networks and river outfalls. It combines radar and ultrasonic gauging for full and partial pipe, mounts at the pipe crown, and needs little O&M in harsh network conditions.
Dual-wave flow, top mount, no entry
Dual-wave radar plus ultrasonic, automatic full/partial-pipe switching, measured from the pipe crown — no confined-space entry, ultra-low power, a corrosion- and impact-resistant housing, and little O&M.
Full / partial-pipe dual-wave flow
UsesRadar + ultrasonic dual-wave flow mode, auto-switches modes for full and partial pipe.
Crown mounting
The sensor mounts at the pipe crown, Reduces silt and debris effects on the instrument.
Install without manhole entry
No confined-space entry, Much safer for people and equipment Easy later O&M.
Compact · easy to install
Compact and easy to install, Fits network installs sites, flexible placement.
Ultra-low power · long pit life
Ultra-low-power design, Suited to long use in unpowered pits.
High protection · corrosion-resistant materials
High ingress protection, Class 10 corrosion resistance, with a corrosion-, acid/alkali-, and impact-resistant housing for long use in sewage networks.
Network flow, built for drainage
Urban storm/sewage mains, river outfalls, and sewage networks — full and partial pipe, top mount, and long online life even without pit power.
Four channels · one instrument
Radar, ultrasonic, and hydrostatic pressure — four measurement channels in one unit, with automatic full/partial-pipe switching. Switch tabs for range, resolution, accuracy, and beam/frequency.
Range m/s
Resolution
Accuracy
Output power
Beam angle
Frequency
Range m
Resolution
Accuracy
Output power
Beam angle
Frequency
Range m/s
Resolution m/s
Accuracy
Beam angle
Frequency
Range m
Resolution
Accuracy
Full and partial pipe,
auto-switch flow measurement
Radar and ultrasonic waves work together. The unit judges pipe fill and switches modes: velocity and level in partial pipe, a seamless handoff when full. An embedded model outputs flow over Modbus-RTU to the network platform.
- Dual-waveRadar + ultrasonic · auto-switch modes
- Full pathFull / partial pipe · all-condition flow
- Top mountCrown mount · no manhole entry
- CommsModbus-RTU · 1× RS-485
Instrument specifications
General specifications for the HKI 305. Use them in a bid table; contract documents govern the final configuration.
Which pipe run do you need to measure?
Specify a radar-ultrasonic flow meter
Tell us diameter, material, full/partial-pipe conditions, and the install point. We will return a selection and range list — parameters can be adjusted.