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If you’re searching for a clamp on ultrasonic flow meter, you’re likely looking for a device that offers non-intrusive, accurate flow measurement across a variety of pipe sizes. The best overall pick, the Ultrasonic Flow Meter TUF-2000B, combines reliable performance with versatility, making it suitable for many applications. The Wall Mounted Ultrasonic Flow Meter offers a durable, industrial-grade option for continuous monitoring, while the Handheld Ultrasonic Flow Meter Kit provides portable convenience for field use. In this category, tradeoffs often involve balancing accuracy, ease of installation, and features like data logging or connectivity. Continue reading for a detailed comparison of these top options to help you make an informed decision.

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14
compared
8
brands
Which clamp on ultrasonic flow meter should you buy?
★ Top Pick
CGOLDENWALL Handheld Ultrasoni
Best Overall for Versatile Pipe Measurement
Non-intrusive clamp-on design for easy, fast installation
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Industrial engineers and technicians needing high-accuracy flow data in high-temperature piping systems
Ultrasonic Flow Meter with Sma
High accuracy (99%) in flow measurement
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Industrial users needing flexible, multi-liquid flow measurement with easy data management
Ultrasonic Flow Meter with SD
Supports a wide range of pipe materials and liquids
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Water utilities and field engineers needing portable, well-equipped flow measurement for water pipelines
Portable Digital Ultrasonic Fl
Supports a wide range of pipe sizes (DN25–DN700 mm)
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Municipal and industrial operators measuring large pipelines or conducting quick surveys without system shutdowns
Handheld Ultrasonic Flow Meter
Extremely wide measurement range (DN15-DN6000mm)
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Pros & cons at a glance
CGOLDENWALL Handheld Ultrasoni
✓ Non-intrusive clamp-on design for easy, fast installation
✗ Customer ratings reflect mixed reviews, indicating variable reliability
Ultrasonic Flow Meter with Sma
✓ High accuracy (99%) in flow measurement
✗ Requires detailed pipe parameter entry for calibration
Ultrasonic Flow Meter with SD
✓ Supports a wide range of pipe materials and liquids
✗ Limited to single liquid measurement at a time
Portable Digital Ultrasonic Fl
✓ Supports a wide range of pipe sizes (DN25–DN700 mm)
✗ Coupling agent must be replaced with silica gel, adding setup time
Handheld Ultrasonic Flow Meter
✓ Extremely wide measurement range (DN15-DN6000mm)
✗ Proper sensor installation is critical for accuracy
Ultrasonic Flow Meter TUF-2000
✓ Supports a wide array of liquids including water, oil, and sewage
✗ Installation may require technical expertise due to complexity
TUF-2000M Digital Ultrasonic F
✓ High accuracy with within 1% measurement error
✗ Installation process can be complex and time-consuming
Wall Mounted Ultrasonic Flow M
✓ Non-invasive clamp-on installation simplifies setup and reduces downtime
✗ Limited to specific pipe sizes (DN50-700)
Ultrasonic Water Flow Meter TU
✓ High accuracy with ±1.0% for flow, ±2.0% for water
✗ Proper installation is critical for accuracy
Ultrasonic Flow Meter for Wate
✓ High measurement accuracy of ±1%
✗ Installation may be difficult for novices
Handheld Ultrasonic Flow Meter
✓ Supports a wide pipe size range (DN15-DN6000) for diverse applications
✗ Requires some technical expertise for proper setup and use
Digital Ultrasonic Flow Meter
✓ High accuracy (+1%) for precise measurements
✗ Limited to DN15-100 pipes, restricting larger pipe applications
Bonvoisin Handheld Ultrasonic
✓ High accuracy (±1%) with good repeatability
✗ Requires contacting seller for software download, which could delay setup
Digital Ultrasonic Flow Meter
✓ High measurement accuracy with minimal interference
✗ Limited to DN50-DN700 pipes, restricting very small or large systems

Key Takeaways

  • High versatility is common among top models, supporting a wide range of pipe sizes and liquids.
  • Portable units tend to sacrifice some advanced features but excel in field applications.
  • Industrial-grade meters prioritize durability and continuous operation over compact size.
  • Data logging and connectivity are important for monitoring trends but can add to the cost.
  • Price often correlates with feature set, so budget models may lack advanced functionalities.
2
Ultrasonic Flow Meter with Sma
Best for High-Temperature Industrial Applications
1
CGOLDENWALL Handheld Ultrasoni
Best Overall for Versatile Pipe Measurement
3
Ultrasonic Flow Meter with SD
Best for Multi-Liquid, Flexible Installation

Our Top Clamp On Ultrasonic Flow Meter Picks

CGOLDENWALL Handheld Ultrasonic Flowmeter with Clamp-on Transducers for Pipes DN15-700mmCGOLDENWALL Handheld Ultrasonic Flowmeter with Clamp-on Transducers for Pipes DN15-700mmBest Overall for Versatile Pipe MeasurementTransducer Types: S1+M2Pipe Range: DN15-700mm / 1/2-28″Accuracy: ±1%VIEW ON AMAZONSee Our Full Breakdown
Ultrasonic Flow Meter with Small & Medium Transducers for Pipes from 0.76 to 27 inches (20 to 700 mm)Ultrasonic Flow Meter with Small & Medium Transducers for Pipes from 0.76 to 27 inches (20 to 700 mm)Best for High-Temperature Industrial ApplicationsPipe Size Range: 0.76 to 27 inches (20 to 700 mm)Temperature Range: -40°F to 320°F (-40°C to 160°C)Transducer Types: Small and MediumVIEW ON AMAZONSee Our Full Breakdown
Ultrasonic Flow Meter with SD Card Data Logger DN25-100mm TS-2 Clamp-on TransducerUltrasonic Flow Meter with SD Card Data Logger DN25-100mm TS-2 Clamp-on TransducerBest for Multi-Liquid, Flexible InstallationLiquid Type: Single liquid such as water, sewage, oil, alcoholPipe Material: Steel, stainless steel, cast iron, copper, PVC, aluminum, glass steelSize Range: DN25-100mmVIEW ON AMAZONSee Our Full Breakdown
Portable Digital Ultrasonic Flow Meter with S2 and M1 Transducers for Pipes 0.59 to 27.56 inches (DN25 to DN700 mm)Portable Digital Ultrasonic Flow Meter with S2 and M1 Transducers for Pipes 0.59 to 27.56 inches (DN25 to DN700 mm)Best for Water Flow in Wide Pipe Sizes with AccessoriesPipe Size Range: 0.59 to 27.56 inches (DN25 to DN700 mm)Temperature Range: -30°C to 90°CTransducers: S2 and M1VIEW ON AMAZONSee Our Full Breakdown
Handheld Ultrasonic Flow Meter Portable Clamp-on Flowmeter TUF-2000H with Standard TransducersHandheld Ultrasonic Flow Meter Portable Clamp-on Flowmeter TUF-2000H with Standard TransducersBest for Wide Range, Non-Contact Flow MeasurementMeasuring Range: DN15-DN6000mmTransducer Types: TS-2, TM-1, TL-1Dimensions: 210x90x30mmVIEW ON AMAZONSee Our Full Breakdown
Ultrasonic Flow Meter TUF-2000B TM-1 & TS-2, Liquid Flowmeter DN20-700mm, IP67 for Water, Sea Water, Sewage, Oil, AlcoholUltrasonic Flow Meter TUF-2000B TM-1 & TS-2, Liquid Flowmeter DN20-700mm, IP67 for Water, Sea Water, Sewage, Oil, AlcoholBest Overall for Versatile Liquid MonitoringModel: TUF-2000BTransducer Types: TS-2 (20-100mm), TM-1 (50-700mm)Pipe Diameter Range: 20-700mmVIEW ON AMAZONSee Our Full Breakdown
TUF-2000M Digital Ultrasonic Flowmeter Module with Clamp-on SensorTUF-2000M Digital Ultrasonic Flowmeter Module with Clamp-on SensorBest for High-Accuracy Industrial AutomationMeasurement Range: DN15-6000mmAccuracy: Within 1%Repeatability: Exceeds 0.2%VIEW ON AMAZONSee Our Full Breakdown
Wall Mounted Ultrasonic Flow Meter, Clamp-On Transit-Time Water Flowmeter DN50-700, IP65 for Industrial Liquid MonitoringWall Mounted Ultrasonic Flow Meter, Clamp-On Transit-Time Water Flowmeter DN50-700, IP65 for Industrial Liquid MonitoringBest for Non-Invasive Industrial Liquid MonitoringMeasurement Technology: Transit-time ultrasonicInstallation Method: Clamp-on, insertion, inlinePipe Size Range: DN50-700VIEW ON AMAZONSee Our Full Breakdown
Ultrasonic Water Flow Meter TUF-2000B with Clamp-on TransducersUltrasonic Water Flow Meter TUF-2000B with Clamp-on TransducersBest for Precise Bidirectional Water MeasurementAccuracy: Flow: ±1.0%, Water: ±2.0%Repeatability: Flow: ±0%, Heat: ±0.5%Max Flow Speed: 209.97 ft/s (64 m/s)VIEW ON AMAZONSee Our Full Breakdown
Ultrasonic Flow Meter for Water SupplyUltrasonic Flow Meter for Water SupplyBest for Basic Water Flow Monitoring in Residential or Small Commercial SettingsMaterial: ABS and steelMeasurement Accuracy: ±1%Voltage Range: AC 85~264V, DC 8~36VVIEW ON AMAZONSee Our Full Breakdown
Handheld Ultrasonic Flow Meter Kit, Portable Clamp-on Liquid Flowmeter with 3 Transducer Sets, DN15-DN6000 Pipe Range, RS232 Data LoggingHandheld Ultrasonic Flow Meter Kit, Portable Clamp-on Liquid Flowmeter with 3 Transducer Sets, DN15-DN6000 Pipe Range, RS232 Data LoggingBest for Versatile Field UseTransducer Sets Included: Small, medium, largePipe Range: DN15-DN6000Data Storage: Up to 2,000 measurement setsVIEW ON AMAZONSee Our Full Breakdown
Digital Ultrasonic Flow Meter for Water and Coolant (DN15-100)Digital Ultrasonic Flow Meter for Water and Coolant (DN15-100)Best for Small Pipes and Simple SetupMedia: Water, seawater, sewage, acidsAccuracy: +1%Material: Stainless SteelVIEW ON AMAZONSee Our Full Breakdown
Bonvoisin Handheld Ultrasonic Flow Meter with Data Output and S1+M2 SensorsBonvoisin Handheld Ultrasonic Flow Meter with Data Output and S1+M2 SensorsBest for Accurate, Portable Data CollectionMeasurement Units: liters, gallonsAccuracy: ±1%Linearity: 0.50%VIEW ON AMAZONSee Our Full Breakdown
Digital Ultrasonic Flow Meter TUF-2000B for Liquid MeasurementDigital Ultrasonic Flow Meter TUF-2000B for Liquid MeasurementBest for Standard Pipe Sizes and Versatile LiquidsPipe size: DN50~DN700mmVelocity range: 0~±10m/sLiquid type: Single liquid, ultrasound transmissibleVIEW ON AMAZONSee Our Full Breakdown

More Details on Our Top Picks

  1. CGOLDENWALL Handheld Ultrasonic Flowmeter with Clamp-on Transducers for Pipes DN15-700mm

    CGOLDENWALL Handheld Ultrasonic Flowmeter with Clamp-on Transducers for Pipes DN15-700mm

    Best Overall for Versatile Pipe Measurement

    View on Amazon

    This model stands out for its portability and broad pipe size range, covering DN15 to DN700mm, making it ideal for field inspections and diverse applications. Unlike larger, more stationary options like the Wall Mounted Ultrasonic Flow Meter, it offers a handheld design that facilitates quick setup and mobility. However, it lacks some features like integrated advanced calibration, which might limit precision in complex systems. Its non-intrusive clamp-on transducers ensure no pipeline disruption, and the rechargeable battery supports up to 12 hours of continuous operation, perfect for lengthy inspections. Data logging and PC connectivity enhance analysis, though the need to purchase couplant separately can be inconvenient. Overall, this pick suits professionals needing flexible, on-the-go flow measurement across various liquids and pipe sizes.

    Pros:
    • Non-intrusive clamp-on design for easy, fast installation
    • Long battery life supports extended use in the field
    • Data logging capability for detailed analysis
    • Compatible with a wide range of liquids and pipe materials
    Cons:
    • Couplant not included, adding to setup costs
    • Customer ratings reflect mixed reviews, indicating variable reliability
    • Limited to specific pipe sizes and materials, restricting some applications

    Best for: Field technicians and engineers needing portable, multi-liquid flow measurements in diverse pipe sizes

    Not ideal for: Facilities requiring permanent, highly integrated flow monitoring systems with real-time network integration

    • Transducer Types:S1+M2
    • Pipe Range:DN15-700mm / 1/2-28″
    • Accuracy:±1%
    • Data Storage:2000 measurements
    • Power:Rechargeable battery (up to 12 hours)
    • Compatible Liquids:Sea water, alcohol, river water, sewage, oils
    Our verdict
    “This flowmeter is ideal for professionals who need a portable, versatile solution for measuring various liquids in different pipe sizes without system shutdowns.”
  2. Ultrasonic Flow Meter with Small & Medium Transducers for Pipes from 0.76 to 27 inches (20 to 700 mm)

    Ultrasonic Flow Meter with Small & Medium Transducers for Pipes from 0.76 to 27 inches (20 to 700 mm)

    Best for High-Temperature Industrial Applications

    View on Amazon

    Compared with the CGOLDENWALL model, this flow meter offers higher accuracy and supports a broader temperature range, making it better suited for industrial environments with demanding thermal conditions. Its non-contacting transducers and support for high temperatures up to 320°F allow for reliable measurements in challenging setups. However, the setup process requires detailed pipe calibration parameters, which can be daunting for users unfamiliar with the system. It supports a wide array of pipe sizes and materials, yet its complexity may pose a barrier for beginners. This model is best for industries where precision and high-temperature operation are priorities, but less so for quick, on-site measurements in less controlled environments.

    Pros:
    • High accuracy (99%) in flow measurement
    • Supports a wide temperature range (-40°F to 320°F)
    • Suitable for various pipe materials and sizes
    • Non-contact transducers prevent system wear
    Cons:
    • Requires detailed pipe parameter entry for calibration
    • Setup complexity may challenge beginners
    • Limited to specific pipe size ranges (20-700 mm)

    Best for: Industrial engineers and technicians needing high-accuracy flow data in high-temperature piping systems

    Not ideal for: Casual users or small-scale applications where quick setup and simplicity are essential

    • Pipe Size Range:0.76 to 27 inches (20 to 700 mm)
    • Temperature Range:-40°F to 320°F (-40°C to 160°C)
    • Transducer Types:Small and Medium
    • Power Source:Built-in battery, charger included
    • Materials Supported:Plastic, Metal
    Our verdict
    “This pick makes the most sense for industrial settings demanding precise, high-temperature flow measurements, despite its complex setup process.”
  3. Ultrasonic Flow Meter with SD Card Data Logger DN25-100mm TS-2 Clamp-on Transducer

    Ultrasonic Flow Meter with SD Card Data Logger DN25-100mm TS-2 Clamp-on Transducer

    Best for Multi-Liquid, Flexible Installation

    View on Amazon

    This model excels in versatility, supporting multiple pipe materials and including SD card data logging, which makes it suitable for diverse liquids like water, sewage, and oils. Its flexible mounting options, including wall and DIN-rail, outperform bulkier, stationary systems like the Wall Mounted Ultrasonic Flow Meter. However, it is limited to measuring a single liquid at a time, which could restrict its use in multi-fluid environments. Proper mounting is crucial for accuracy, demanding careful setup. Its compatibility with various pipe materials broadens its applicability, but the need for precise installation can be a drawback for less experienced users. Overall, this flow meter fits well in environments requiring flexible, reliable data collection with adaptable mounting options.

    Pros:
    • Supports a wide range of pipe materials and liquids
    • Includes SD card data logging for easy data transfer
    • Flexible installation options (wall and DIN-rail)
    • Suitable for various industrial liquids
    Cons:
    • Limited to single liquid measurement at a time
    • Requires accurate mounting for reliable readings
    • Setup can be complex for inexperienced users

    Best for: Industrial users needing flexible, multi-liquid flow measurement with easy data management

    Not ideal for: Users seeking a multi-liquid or multi-application device without the need for careful mounting setup

    • Liquid Type:Single liquid such as water, sewage, oil, alcohol
    • Pipe Material:Steel, stainless steel, cast iron, copper, PVC, aluminum, glass steel
    • Size Range:DN25-100mm
    • Installation Methods:Wall mounting, DIN-rail mounting
    • Data Logging:SD card included
    Our verdict
    “This flowmeter is ideal for industrial environments requiring adaptable installation and reliable data logging for single-liquid measurements.”
  4. Portable Digital Ultrasonic Flow Meter with S2 and M1 Transducers for Pipes 0.59 to 27.56 inches (DN25 to DN700 mm)

    Portable Digital Ultrasonic Flow Meter with S2 and M1 Transducers for Pipes 0.59 to 27.56 inches (DN25 to DN700 mm)

    Best for Water Flow in Wide Pipe Sizes with Accessories

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    Compared to the CGOLDENWALL and Ultrasonic with high-temperature support, this flow meter emphasizes portability and comprehensive accessories, making it suitable for on-site water flow measurements across a broad pipe size spectrum. Its inclusion of both S2 and M1 transducers simplifies installation and improves measurement accuracy. The aluminum case and accessories facilitate quick setup, but the need to replace coupling agents with silica gel due to shipping restrictions adds an extra step. Its focus on water flow limits its use for other liquids, but makes it easier to operate for water utility applications. The device’s portability and accessory bundle make it attractive for mobile measurement tasks, though its limited temperature range could rule out some industrial environments.

    Pros:
    • Supports a wide range of pipe sizes (DN25–DN700 mm)
    • Includes comprehensive accessories for quick setup
    • Portable with durable aluminum case
    • Suitable for water and similar low-temperature liquids
    Cons:
    • Coupling agent must be replaced with silica gel, adding setup time
    • Limited to water flow measurement, reducing versatility
    • Temperature range is limited to -30°C to 90°C

    Best for: Water utilities and field engineers needing portable, well-equipped flow measurement for water pipelines

    Not ideal for: Industries requiring high-temperature measurements or multi-liquid analysis without additional modifications

    • Pipe Size Range:0.59 to 27.56 inches (DN25 to DN700 mm)
    • Temperature Range:-30°C to 90°C
    • Transducers:S2 and M1
    • Cable Length:5m
    • Material:Aluminum case
    Our verdict
    “This meter is best for water utilities and mobile measurement needs, especially when portability and ready-to-use accessories are priorities.”
  5. Handheld Ultrasonic Flow Meter Portable Clamp-on Flowmeter TUF-2000H with Standard Transducers

    Handheld Ultrasonic Flow Meter Portable Clamp-on Flowmeter TUF-2000H with Standard Transducers

    Best for Wide Range, Non-Contact Flow Measurement

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    Compared with the CGOLDENWALL and other models, the TUF-2000H offers an impressive measurement range up to DN6000mm, making it suitable for very large pipelines without system disruption. Its non-contact sensors eliminate the need for pipeline cuts, ideal for quick assessments in industrial or municipal settings. The large LCD display and data logging features enhance usability, but initial sensor setup can be tricky and may affect measurement accuracy if not done properly. Its focus on liquid flow and the need for proper sensor placement mean it might be less suitable for applications requiring high precision or complex pipe configurations. This device is best for users needing a broad measurement range and easy, non-intrusive operation.

    Pros:
    • Extremely wide measurement range (DN15-DN6000mm)
    • Non-contact sensors prevent pipeline disruption
    • Large LCD display for real-time readings
    • Long battery life supports extended field use
    Cons:
    • Proper sensor installation is critical for accuracy
    • Limited to liquid flow measurement only
    • Initial setup may be complex for new users

    Best for: Municipal and industrial operators measuring large pipelines or conducting quick surveys without system shutdowns

    Not ideal for: Small-scale or high-precision applications where detailed calibration is essential

    • Measuring Range:DN15-DN6000mm
    • Transducer Types:TS-2, TM-1, TL-1
    • Dimensions:210x90x30mm
    • Battery Life:Over 12 hours
    • Data Storage:2000 data lines
    Our verdict
    “This flowmeter suits large-scale industrial and municipal applications where measuring very large pipes quickly and non-invasively is needed, despite setup challenges.”
  6. Ultrasonic Flow Meter TUF-2000B TM-1 & TS-2, Liquid Flowmeter DN20-700mm, IP67 for Water, Sea Water, Sewage, Oil, Alcohol

    Ultrasonic Flow Meter TUF-2000B TM-1 & TS-2, Liquid Flowmeter DN20-700mm, IP67 for Water, Sea Water, Sewage, Oil, Alcohol

    Best Overall for Versatile Liquid Monitoring

    View on Amazon

    This ultrasonic flow meter stands out for its ability to handle a wide range of liquids, from water and sewage to oils and alcohols, making it highly adaptable for different industrial environments. Compared with the TUF-2000M, it offers more rugged IP67 protection, ideal for outdoor or harsh settings. While setup complexity is higher, the comprehensive accessories and multiple signal outputs support flexible integration. Its heavy, bulky design might challenge portability, but for stationary applications where durability matters, this model excels. The inclusion of transducers suitable for various pipe materials broadens its usability, yet the complex installation process can be a hurdle for less experienced users.

    Pros:
    • Supports a wide array of liquids including water, oil, and sewage
    • Durable IP67 waterproof and dustproof design
    • Multiple signal output options for flexible system integration
    • Includes comprehensive accessories and transducers
    Cons:
    • Installation may require technical expertise due to complexity
    • Heavy and bulky for portable or mobile use
    • Limited user reviews make performance validation harder

    Best for: Industrial facilities needing durable, multi-liquid flow measurement in outdoor or harsh environments

    Not ideal for: Small-scale or portable setups where ease of transport and quick installation are priorities

    • Model:TUF-2000B
    • Transducer Types:TS-2 (20-100mm), TM-1 (50-700mm)
    • Pipe Diameter Range:20-700mm
    • Material Compatibility:Steel, Stainless Steel, Cast Iron, Copper, PVC, Aluminum, Glass Steel
    • Protection Level:IP67
    • Signal Output:4-20mA, Oct Pulse, Relay
    Our verdict
    “This model is best suited for large-scale, permanent installations in challenging environments needing versatile liquid measurement.”
  7. TUF-2000M Digital Ultrasonic Flowmeter Module with Clamp-on Sensor

    TUF-2000M Digital Ultrasonic Flowmeter Module with Clamp-on Sensor

    Best for High-Accuracy Industrial Automation

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    The TUF-2000M offers an excellent balance of accuracy and size, supporting pipe diameters from DN15 to DN6000 with an accuracy within 1%, making it ideal for precise industrial flow control. Unlike the Wall Mounted Ultrasonic Flow Meter, which emphasizes non-invasive installation, the TUF-2000M is designed for straightforward clamp-on setup on a broad range of pipe sizes, though its installation can still be technically demanding. It excels in applications requiring high repeatability and reliable data transmission via RS-485, suitable for automation systems. However, this high level of precision and extensive size range come at a higher cost, and setup complexity may challenge less experienced users.

    Pros:
    • High accuracy with within 1% measurement error
    • Supports a wide pipe size range from DN15 to DN6000
    • Reliable RS-485 interface for long-distance communication
    • Exceeds 0.2% repeatability for consistent results
    Cons:
    • Installation process can be complex and time-consuming
    • Requires technical knowledge for proper setup
    • Higher price point reflecting industrial-grade features

    Best for: Industrial automation projects requiring precise, reliable flow measurement across large pipe networks

    Not ideal for: Small or temporary installations where quick setup and minimal technical effort are needed

    • Measurement Range:DN15-6000mm
    • Accuracy:Within 1%
    • Repeatability:Exceeds 0.2%
    • Linearity:Better than 0.5%
    • Interface:RS-485
    • Transmission Distance:Up to 1000m
    Our verdict
    “This pick is ideal for industrial environments where precise, long-term flow data is critical and users are comfortable with technical installation.”
  8. Wall Mounted Ultrasonic Flow Meter, Clamp-On Transit-Time Water Flowmeter DN50-700, IP65 for Industrial Liquid Monitoring

    Wall Mounted Ultrasonic Flow Meter, Clamp-On Transit-Time Water Flowmeter DN50-700, IP65 for Industrial Liquid Monitoring

    Best for Non-Invasive Industrial Liquid Monitoring

    View on Amazon

    This Wall Mounted Ultrasonic Flow Meter leverages transit-time technology to provide accurate, non-invasive flow measurements, ideal for installations where pipe cutting is undesirable. Its clamp-on, insertion, and inline options offer flexible mounting, with the IP65 rating suitable for many industrial environments. Compared to the Water Flow Meter with Clamp-on Transducers, it emphasizes wall-mounting for easier access and maintenance. Its ability to support heat energy calculations adds value for thermal applications, though it’s limited to pipe sizes DN50-700 and requires homogeneous liquids free of high suspended particles. Installation depends on proper pipe conditions and may need temperature sensors for heat calculations.

    Pros:
    • Non-invasive clamp-on installation simplifies setup and reduces downtime
    • Supports heat energy measurement when paired with temperature sensors
    • Durable IP65 wall-mounted design suitable for harsh environments
    • Flexible installation methods (clamp-on, insertion, inline)
    Cons:
    • Limited to specific pipe sizes (DN50-700)
    • Requires homogeneous liquids without high suspended particles
    • Additional sensors needed for heat energy calculations

    Best for: Industrial facilities requiring non-invasive, wall-mounted liquid flow monitoring with thermal energy measurement

    Not ideal for: Pipes outside the DN50-700 range or liquids with high turbidity and suspended solids

    • Measurement Technology:Transit-time ultrasonic
    • Installation Method:Clamp-on, insertion, inline
    • Pipe Size Range:DN50-700
    • Ingress Protection:IP65
    • Application:Industrial liquid monitoring, thermal energy
    • Wall Mount:Yes
    Our verdict
    “This model is best for industrial settings needing non-invasive, thermal-energy-capable flow measurement on accessible pipe sizes.”
  9. Ultrasonic Water Flow Meter TUF-2000B with Clamp-on Transducers

    Ultrasonic Water Flow Meter TUF-2000B with Clamp-on Transducers

    Best for Precise Bidirectional Water Measurement

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    The TUF-2000B with Clamp-on Transducers provides highly accurate, bidirectional flow measurement suitable for water, wastewater, and oils, making it a versatile choice. Its IP68/IP65 protection ensures durability in demanding environments, surpassing the protection level of the Wall Mounted Ultrasonic Flow Meter. The backlit LCD facilitates easy reading in various conditions, and its ability to measure flow in both directions adds to its utility. However, the setup can be intricate, especially for beginners, and it’s limited to conductive liquids, reducing its universality. Its high accuracy and rugged design make it suitable for critical water management tasks, but proper installation is essential to realize its full potential.

    Pros:
    • High accuracy with ±1.0% for flow, ±2.0% for water
    • IP68/IP65 protection for tough environments
    • Bidirectional measurement capability
    • Wide compatibility with pipe sizes DN15-700mm
    Cons:
    • Proper installation is critical for accuracy
    • Limited to conductive liquids
    • Setup complexity may challenge beginners

    Best for: Municipal water utilities or industrial sites needing reliable, bidirectional, high-accuracy flow data

    Not ideal for: Users seeking a simple, plug-and-play device for occasional or non-critical measurements

    • Accuracy:Flow: ±1.0%, Water: ±2.0%
    • Repeatability:Flow: ±0%, Heat: ±0.5%
    • Max Flow Speed:209.97 ft/s (64 m/s)
    • Fluid Temperature Range:32°F to 320°F
    • Protection:IP68/IP65
    • Measurement Type:Bidirectional
    Our verdict
    “This flow meter is best suited for precise, durable measurement needs in demanding water and liquid management scenarios.”
  10. Ultrasonic Flow Meter for Water Supply

    Ultrasonic Flow Meter for Water Supply

    Best for Basic Water Flow Monitoring in Residential or Small Commercial Settings

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    This ultrasonic flow meter, crafted from durable ABS and steel, offers a straightforward solution for measuring water flow with an accuracy of ±1%. Its simplicity makes it appealing for water supply, heating, and basic industrial applications, especially where a full digital interface isn’t necessary. Compared to high-end models like the TUF-2000M, it emphasizes durability and ease of use, though it lacks detailed connectivity options or digital logging features. Installation might be challenging for beginners due to limited instructions, and its focus on basic measurement means it lacks advanced features such as remote data access or integrated thermal measurements. It makes sense for users needing reliable, high-accuracy flow data without complex setup.

    Pros:
    • High measurement accuracy of ±1%
    • Robust construction with durable materials
    • Complete kit with transducers, cables, and sealant
    • Suitable for seawater, alcohol, and river water
    Cons:
    • Installation may be difficult for novices
    • Limited digital connectivity or data logging options
    • No advanced features like remote monitoring

    Best for: Small-scale water supply systems or heating systems requiring reliable, accurate flow measurement

    Not ideal for: Large industrial or remote monitoring applications where advanced data features are essential

    • Material:ABS and steel
    • Measurement Accuracy:±1%
    • Voltage Range:AC 85~264V, DC 8~36V
    • Included Components:Flow meter, transducers, signal cable, belts, sealant
    • Applicable Pipes:Copper and PVC
    • Suitable Liquids:Seawater, alcohol, river water
    Our verdict
    “This flow meter provides a reliable, straightforward solution for basic water flow measurement needs in small or residential setups.”
  11. Handheld Ultrasonic Flow Meter Kit, Portable Clamp-on Liquid Flowmeter with 3 Transducer Sets, DN15-DN6000 Pipe Range, RS232 Data Logging

    Handheld Ultrasonic Flow Meter Kit, Portable Clamp-on Liquid Flowmeter with 3 Transducer Sets, DN15-DN6000 Pipe Range, RS232 Data Logging

    Best for Versatile Field Use

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    This handheld ultrasonic flow meter kit stands out for its flexibility across a broad pipe size range (DN15 to DN6000), making it ideal for field inspections where pipe dimensions vary. Unlike the more compact Digital Ultrasonic Flow Meter for Water and Coolant, which is limited to smaller pipes (DN15-100), this kit supports larger industrial pipes without invasive procedures. The inclusion of multiple transducer sets and data logging capabilities enhances its value for detailed analysis. The tradeoff is that couplant gel must be purchased separately, adding to setup complexity. Its portability and comprehensive features make it well-suited for technicians working in water, wastewater, or industrial environments. However, the setup requires some technical knowledge, which might challenge beginners.

    Pros:
    • Supports a wide pipe size range (DN15-DN6000) for diverse applications
    • Includes multiple transducer sets and data logging for detailed analysis
    • Portable with carrying case, suitable for on-site inspections
    • Non-invasive measurement avoids pipe cutting
    Cons:
    • Couplant gel must be purchased separately, adding to initial costs
    • Requires some technical expertise for proper setup and use

    Best for: Field technicians and engineers needing versatile, non-invasive measurements across a wide range of pipe sizes.

    Not ideal for: Small-scale users or those seeking a simple, plug-and-play solution without additional setup or accessories.

    • Transducer Sets Included:Small, medium, large
    • Pipe Range:DN15-DN6000
    • Data Storage:Up to 2,000 measurement sets
    • Output:RS232
    • Power:Charger included
    • Additional:Requires couplant gel (not included)
    Our verdict
    “This kit is ideal for professionals needing high flexibility and detailed data in large or varied pipe systems.”
  12. Digital Ultrasonic Flow Meter for Water and Coolant (DN15-100)

    Digital Ultrasonic Flow Meter for Water and Coolant (DN15-100)

    Best for Small Pipes and Simple Setup

    View on Amazon

    This ultrasonic flow meter offers high accuracy (+1%) in a compact, stainless steel design, making it suitable for smaller pipes (DN15-100). Compared with the Handheld Ultrasonic Flow Meter Kit, which supports larger pipes and multiple transducers, this model focuses on straightforward installation and durability for limited pipe sizes. Its IP65 protection ensures reliable operation in harsh environments. The main tradeoff is its restricted flow range, which excludes larger or industrial-sized pipes. This makes it a good choice for applications like HVAC or small water systems where simplicity and durability are priorities. However, users needing to measure larger pipes will find this limited.

    Pros:
    • High accuracy (+1%) for precise measurements
    • Robust stainless steel construction for durability
    • Easy clamp-on installation without pipe cutting
    • IP65 rated for dust and water resistance
    Cons:
    • Limited to DN15-100 pipes, restricting larger pipe applications
    • Requires proper calibration for optimal accuracy

    Best for: Industrial users requiring durable, accurate measurements on smaller pipes without complex setups.

    Not ideal for: Large-scale pipeline inspections involving pipes larger than DN100 or complex data logging needs.

    • Media:Water, seawater, sewage, acids
    • Accuracy:+1%
    • Material:Stainless Steel
    • Protection Level:IP65
    • Flow Range:DN15-100
    • Item Weight:3.3 pounds
    Our verdict
    “This model suits industrial environments needing reliable, easy-to-install measurements on small pipes, with less concern for larger systems.”
  13. Bonvoisin Handheld Ultrasonic Flow Meter with Data Output and S1+M2 Sensors

    Bonvoisin Handheld Ultrasonic Flow Meter with Data Output and S1+M2 Sensors

    Best for Accurate, Portable Data Collection

    View on Amazon

    The Bonvoisin flow meter excels in portable, non-intrusive measurement across a range of liquids and pipe sizes (DN15-700mm). Its accuracy (±1%) and data logging features make it a strong choice for field professionals who need quick, reliable results. Compared with the Digital Ultrasonic Flow Meter for Water and Coolant, which is more limited in pipe size, this model supports larger pipes with the optional L2 sensors. Its long battery life (up to 12 hours) and easy sensor setup are benefits, but users must contact the seller for software downloads, adding a layer of complexity. It’s best suited for users who prioritize accuracy and mobility over plug-and-play simplicity.

    Pros:
    • High accuracy (±1%) with good repeatability
    • Supports a broad pipe size range (DN15-700mm) with optional sensors
    • Long battery life supports extended field use
    • Easy sensor setup for different pipe sizes
    Cons:
    • Requires contacting seller for software download, which could delay setup
    • Limited to specific pipe diameters unless additional sensors are purchased

    Best for: Field technicians needing portable, accurate measurements on a variety of pipe sizes and liquids.

    Not ideal for: Users who prefer plug-and-play devices without needing to contact sellers or manage additional software downloads.

    • Measurement Units:liters, gallons
    • Accuracy:±1%
    • Linearity:0.50%
    • Repeatability:0.20%
    • Velocity Range:0.1-6 m/s
    • Temperature Range:32-230°F (0-110°C)
    • Data Storage:2000 measurement groups
    • Battery Life:up to 12 hours
    Our verdict
    “This flow meter is well-suited for professionals needing accurate, portable measurements across various pipe sizes in demanding field conditions.”
  14. Digital Ultrasonic Flow Meter TUF-2000B for Liquid Measurement

    Digital Ultrasonic Flow Meter TUF-2000B for Liquid Measurement

    Best for Standard Pipe Sizes and Versatile Liquids

    View on Amazon

    The TUF-2000B is a solid choice for measuring liquids like water, oil, and sewage in pipes ranging from DN50 to DN700. Its bi-directional measurement and high accuracy make it versatile for various industrial applications. Compared to the Handheld Ultrasonic Flow Meter Kit, which supports larger pipes and multiple transducers, the TUF-2000B is more specialized for mid-range pipes with straightforward setup. Its compatibility with different pipe materials broadens its usability, but it requires specific pipe sizes and only works with ultrasound-transmissible liquids. This makes it suitable for users who need reliable, multi-liquid measurements in common pipe sizes without extensive customization.

    Pros:
    • High measurement accuracy with minimal interference
    • Suitable for various pipe materials and liquids
    • Bi-directional flow measurement for comprehensive analysis
    Cons:
    • Limited to DN50-DN700 pipes, restricting very small or large systems
    • Requires specific pipe sizes for optimal performance

    Best for: Industrial operators needing accurate, bi-directional flow measurements in mid-sized pipes with a focus on common liquids.

    Not ideal for: Large pipe systems or applications involving non-ultrasound transmissible liquids or non-standard pipe sizes.

    • Pipe size:DN50~DN700mm
    • Velocity range:0~±10m/s
    • Liquid type:Single liquid, ultrasound transmissible
    • Pipe material:Steel, stainless steel, cast iron, copper, PVC, aluminum, glass steel
    Our verdict
    “This device is ideal for industrial setups needing reliable, bi-directional flow data in standard pipe sizes with multiple liquid types.”
clamp on ultrasonic flow meter
What makes a great clamp on ultrasonic flow meter
1
Measurement Range and Pipe Compatibility
Ensure the flow meter supports your pipe diameter and flow range.
2
Ease of Installation and Maintenance
Look for models that allow quick, non-intrusive mounting, ideally with minimal calibration.
3
Data Logging and Connectivity
Data logging capabilities can be essential for tracking flow trends and troubleshooting.
4
Durability and Environmental Suitability
Industrial environments demand rugged, IP-rated devices that withstand moisture, dust, and harsh conditions.
How to choose your clamp on ultrasonic flow meter
1
How we picked
The products in this roundup were evaluated based on core criteria essential for clamp on ultrasonic flow meters: measur
2
Measurement Range and Pipe Compatibility
Ensure the flow meter supports your pipe diameter and flow range.
3
Ease of Installation and Maintenance
Look for models that allow quick, non-intrusive mounting, ideally with minimal calibration.
4
Data Logging and Connectivity
Data logging capabilities can be essential for tracking flow trends and troubleshooting.
5
Durability and Environmental Suitability
Industrial environments demand rugged, IP-rated devices that withstand moisture, dust, and harsh conditions.
Vetted clamp on ultrasonic flow meter ·
The best clamp on ultrasonic flow meter, compared
★ Winner CGOLDENWALL Handheld Ultrasoni
Best Overall for Versatile Pipe Measurement
14compared

How We Picked

The products in this roundup were evaluated based on core criteria essential for clamp on ultrasonic flow meters: measurement accuracy, ease of installation, build quality, compatibility with different pipe sizes and liquids, data logging capabilities, and overall value. We prioritized models that strike a balance between performance and user-friendliness, ensuring they meet the needs of both professionals and serious hobbyists. Additionally, durability, power options, and available support played roles in our ranking, with a focus on devices suited for various environments—from industrial settings to portable field use.
Which clamp on ultrasonic flow meter fits you?
The everyday user
All-round, reliable
The enthusiast
Premium & high-performance
The gift-giver
Looks & craftsmanship

Factors to Consider When Choosing Clamp On Ultrasonic Flow Meter

When selecting a clamp on ultrasonic flow meter, consider how your specific application influences your choice. Key factors include measurement accuracy, ease of installation, and compatibility with your pipe sizes and liquids. Understanding these aspects helps avoid common pitfalls like choosing a device that doesn’t support your pipe diameter or is too complicated to install. Balancing features with your budget ensures you get good value, especially since higher-end models often include data logging and connectivity options that may or may not be necessary for your use case.

Measurement Range and Pipe Compatibility

Ensure the flow meter supports your pipe diameter and flow range. Some models excel with small to medium pipes, while others are designed for larger diameters up to DN700 or more. Mismatched specifications can lead to inaccurate readings or installation difficulties, so carefully check the compatibility chart. Remember, a device that fits your current setup is preferable over one that offers broader range but less precision or reliability in your specific application.

Ease of Installation and Maintenance

Look for models that allow quick, non-intrusive mounting, ideally with minimal calibration. Clamp-on ultrasonic meters should be straightforward to install without cutting or disrupting existing pipes. Consider how often maintenance or recalibration is needed, especially if you plan to deploy the device in hard-to-access locations. Devices with clear instructions, robust transducers, and durable clamps tend to save time and reduce errors over the long term.

Data Logging and Connectivity

Data logging capabilities can be essential for tracking flow trends and troubleshooting. Some models include SD card slots or digital outputs like RS232 or USB, making it easier to integrate with existing monitoring systems. However, these features often come at a higher price. Evaluate whether real-time data access, remote monitoring, or historical records are necessary for your application, and choose accordingly to avoid overspending on unnecessary features.

Durability and Environmental Suitability

Industrial environments demand rugged, IP-rated devices that withstand moisture, dust, and harsh conditions. For outdoor or marine use, look for models with IP67 or IP65 ratings. Portable units should have sturdy casings to resist drops and impacts. Be cautious of models with fragile components or inadequate sealing, which can lead to costly repairs or replacements and downtime in critical applications.

Cost and Overall Value

While it might be tempting to prioritize the cheapest option, investing in a higher-quality device often results in better accuracy, durability, and features that save time and money over its lifespan. Balance your budget with your performance needs. For instance, if you require frequent data collection and integration, paying more for a model with advanced connectivity makes sense. Conversely, for simple spot measurements, a basic, cost-effective model can suffice.

Frequently Asked Questions

Can a clamp on ultrasonic flow meter be used for liquids other than water?

Yes, many clamp on ultrasonic flow meters are designed to measure a variety of liquids, including oils, chemicals, and wastewater, provided they are compatible with the device specifications. It’s important to verify the materials of the transducers and the clamp to ensure chemical resistance and durability. Always consult the manufacturer’s guidelines to confirm suitability for your specific liquid to prevent damage or inaccurate readings.

How accurate are clamp on ultrasonic flow meters compared to inline meters?

Clamp on ultrasonic flow meters typically offer good accuracy for non-intrusive measurements, often within 1-3% of reading, depending on the model and conditions. While they may not match the precision of inline meters in some high-precision applications, their ease of installation and minimal maintenance make them a popular choice. For critical processes demanding extremely tight tolerances, inline meters might be more appropriate, but for most general uses, clamp-on units provide a reliable alternative.

Is installation of a clamp on ultrasonic flow meter difficult?

Installation is generally straightforward since these meters attach externally to pipes without cutting or disrupting the flow. Proper surface cleaning, correct transducer placement, and securing clamps are key steps. Some models include mounting accessories or detailed instructions to simplify setup. However, achieving optimal signal quality may require careful positioning and calibration, especially on irregular or insulated pipes, so reading the manual thoroughly is advisable.

What maintenance does a clamp on ultrasonic flow meter require?

Most clamp on ultrasonic flow meters require minimal maintenance, mainly periodic cleaning of the transducers to ensure good signal transmission. Checking the mounting clamps and connections for integrity and corrosion is also recommended, especially in harsh environments. Calibration or verification against known flow rates may be needed periodically, depending on the accuracy requirements and operational conditions. Regular inspections help maintain measurement reliability over time.

When should I choose a portable clamp on ultrasonic flow meter over a fixed one?

Choose a portable model if your measurements are sporadic, or you need to move the device between different locations or pipes. Portable meters typically feature rechargeable batteries and compact designs, making fieldwork more convenient. Fixed, wall-mounted units are better suited for continuous monitoring in permanent setups, especially in industrial or process environments. The decision depends on your frequency of measurements and the need for mobility versus consistent, long-term data collection.

Conclusion

For most users seeking a reliable, all-around performer, the Ultrasonic Flow Meter TUF-2000B offers excellent accuracy and versatility at a reasonable price, making it the best overall choice. Those who prioritize durability and continuous monitoring in industrial settings should consider the Wall Mounted Ultrasonic Flow Meter. Beginners or occasional users will find the Handheld Ultrasonic Flow Meter Kit more accessible and easy to operate. If budget is a primary concern, look for models with essential features but fewer frills, while professionals needing advanced data and connectivity should opt for premium options with extensive logging capabilities. Each choice aligns with different priorities—accuracy, convenience, durability, or affordability—so weigh your specific needs carefully.

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