The FK-2100H Series Ultrasonic Flow Meter is a high-performance transit-time ultrasonic flow measurement instrument developed using patented technologies and state-of-the-art electronic components. Compared with previous versions, the SUP-2100H has been comprehensively upgraded in both hardware and software, while retaining the proven pulse measurement technology, ultrasonic ignition, and small-signal receiving circuits.
Major improvements have been made to the battery-powered circuit and transmitter design, resulting in higher reliability, improved measurement stability, and enhanced anti-interference capability. By integrating advanced measurement models and modern semiconductor technologies, the SUP-2100H delivers outstanding performance in demanding industrial environments.
With its compact design, intuitive operation, and excellent accuracy, the SUP-2100H series has become one of the best-selling ultrasonic flowmeters and continues to gain wide recognition in the international market.
Linearity: ±0.5%
Repeatability: ±0.2%
Time measurement resolution: 100 picoseconds
Fast totalizing period: 0.5 seconds
Patent balanced low-voltage multi-pulse ultrasonic igniting circuit
Excellent anti-interference capability, suitable for harsh industrial environments
Self-adapting signal receiving circuit, no manual adjustment required
Built-in rechargeable Ni-H battery, operating continuously for over 12 hours
Bilingual user interface (Chinese and English)
Four independent flow totalizers
Built-in data logger for historical data storage and analysis
The FK-2100H ultrasonic flow meter measures liquid flow velocity in a closed conduit using the transit-time difference method. The clamp-on ultrasonic transducers are mounted externally on the pipe, providing a non-intrusive, non-fouling, and easy-to-install measurement solution.
Two transducers alternately transmit and receive frequency-modulated ultrasonic pulses. When the sound signal travels with the flow, the transit time is shorter; when traveling against the flow, the transit time is longer. The difference between these two transit times is directly proportional to the fluid velocity.
Depending on pipe diameter and fluid characteristics, the transducers can be installed using different mounting methods:
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V-method: Sound traverses the pipe twice
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W-method: Sound traverses the pipe four times
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Z-method: Transducers mounted on opposite sides, sound traverses once
The flow velocity is calculated based on the following relationship:
ΔT = Tup − Tdown
Where:
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θ – Included angle to the flow direction
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M – Number of ultrasonic beam traverses
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D – Pipe diameter
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Tup – Transit time from upstream to downstream
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Tdown – Transit time from downstream to upstream
Using this principle, the FK-2100H accurately calculates instantaneous flow rate and accumulated flow.
The FK-2100H Series Ultrasonic Flow Meter is widely used in:
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Industrial process flow measurement
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Water supply and wastewater systems
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Petroleum and chemical industries
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Power plants and energy systems
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HVAC and utility monitoring
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Flow surveys, troubleshooting, and temporary measurement tasks
