High-Precision Ultrasonic Flow Meter | FPGA Fast-Sampling & Bubble Tolerant | FHS300
The FHS300 High-Precision Ultrasonic Flow Meter is engineered for critical, fast-response liquid measurement in challenging industrial environments. Powered by a high-speed FPGA processing algorithm sampling at 300 Hz, the FHS300 excels where standard transit-time meters struggle—delivering stable, precise readings even in fluids with micro-bubbles, mild entrained solids, or rapid flow fluctuations.
Equipped with premium German-imported acoustic wedges and an intuitive 4-line LCD display, this unit covers pipe sizes from DN25 up to DN1200, making it the premier choice for continuous industrial HVAC loops, chemical processing, and high-accuracy fluid control.
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Key Highlights:
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300 Hz High-Speed FPGA Processing: Real-time dynamic sampling for rapid flow changes.
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High Bubble Tolerance: Advanced signal processing filters out noise from aerated or micro-bubble liquids.
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German-Imported Acoustic Wedges: Superior transducer signal strength and long-term acoustic coupling.
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Modern 4-Line LCD Display: Sleek, user-friendly interface displaying rate, totalizer, signal quality, and status simultaneously.
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Pipe Range: DN25 to DN1200 (1″ to 48″).
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Description
High-Performance Ultrasonic Flow Sensing for Demanding Liquids
Standard ultrasonic flow meters often drop signals when encountering micro-bubbles, turbulence, or sudden velocity spikes. The FHS300 solves this by combining high-frequency FPGA digital processing with precision German-engineered acoustic optics. By sampling the acoustic waveform 300 times per second, the FHS300 filters out signal noise and maintains accurate continuous measurement through difficult process conditions.
Non-Intrusive Precision Without Downtime
Featuring clamp-on transducers, the FHS300 mounts directly onto existing metal, plastic, or lined pipework without line cutting, pressure drop, or fluid contact. Its high-resolution time-of-flight calculation provides exceptional accuracy (±0.5% to ±1.0%) across liquid velocities ranging from ultra-low flows up to high-speed dynamic streams.
Primary Industrial Applications
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Aerated & Micro-Bubble Fluids: Outgassing liquids, cooling tower water, and aerated process lines where traditional transit-time meters fail.
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Industrial HVAC & Energy Loops: Precision flow tracking in primary/secondary chilled water and high-volume heating circuits.
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High-Speed Batching & Dynamic Loops: Continuous processes requiring instant sampling updates and rapid analog/digital response times.
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Chemical & Industrial Manufacturing: Pure and mild industrial fluids across steel, PVC, copper, and composite pipes.
Features
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300 Hz High-Speed FPGA Engine: High-rate digital processing captures rapid dynamic shifts and sudden flow changes in real time.
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Enhanced Signal Processing for Aerated Fluids: Superior acoustic signal reconstruction maintains accuracy even in fluids containing entrained micro-bubbles or low-level particulate suspensions.
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German-Imported Acoustic Wedges: Built with premium acoustic materials to ensure minimal signal attenuation, high thermal resistance, and reliable sound transmission.
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4-Line Illuminated Graphic LCD: Displays instantaneous flow rate, positive/negative net totals, signal strength (Q-value), and system diagnostics on one clear screen.
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Non-Invasive External Clamp-On Installation: Eliminates pipe cutting, system depressurization, process contamination, and pressure loss.
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Versatile Industrial Outputs: Fully equipped with 4-20mA analog output, OCT pulse, relay outputs, and RS485 Modbus RTU communication for direct SCADA/PLC integration.
Specification
| Parameter | Technical Specification |
| Model | FHS300 |
| Measurement Principle |
High-speed FPGA transit-time ultrasonic |
| Sampling Rate |
300 Hz |
| Accuracy | ±0.5% – ±1.0% of reading |
| Pipe Size Coverage |
DN25 mm to DN1200 mm (1″ to 48″) |
| Transducer Technology |
Precision German-imported acoustic wedges |
| Display Unit |
4-line backlit LCD display (Flow rate, Totalizer, Signal Quality) |
| Pipe Materials | Carbon steel, stainless steel, cast iron, PVC, copper, aluminum, fiberglass |
| Fluid Types |
Water, chilled/hot water, aerated liquids, light oils, chemical solutions |
| Outputs & Interfaces |
• 4-20mA (Active/Passive)
• OCT Pulse Output
• Relay Alarm Output
• RS485 (Modbus RTU) |
| Enclosure Rating | IP67 field-mountable housing |
| Fluid Temperature Range | Standard: -20°C to 90°C (High-temperature options available) |
FAQ
Q1: What makes the FHS300 different from the standard FMU833 model?
While the FMU833 is an economical workhorse for standard clean liquids and large pipes (up to DN6000), the FHS300 is a high-performance unit built with a 300 Hz FPGA sampling engine. The FHS300 is specifically designed for demanding environments with aerated fluids, rapid velocity changes, or applications requiring higher accuracy and update speeds.
Q2: Can the FHS300 handle liquids with air bubbles?
Yes. Thanks to its 300 Hz high-speed FPGA signal processing and advanced acoustic filtering, the FHS300 has high bubble tolerance and can reliably measure fluids containing micro-bubbles or light aeration that typically disrupt standard ultrasonic meters.
Q3: What line sizes does the FHS300 support?
The FHS300 is optimized for pipe diameters ranging from DN25 to DN1200 (1″ to 48″). For pipe sizes larger than DN1200 or budget-conscious standard applications, our FMU833 wall-mount series is recommended.
Q4: Do I need to cut the pipe to install the FHS300?
No. The FHS300 uses external clamp-on transducers engineered with German-imported acoustic wedges. They strap onto the outside of the pipe without breaking into the line or interrupting process operations.
Downloads
High-Precision Ultrasonic Flow Meter | FPGA Fast-Sampling & Bubble Tolerant | FHS300 – Datasheet
