The best ultrasonic water flow meter depends on pipe size, portability, data needs, and the measurement setup. The TUF-2000B digital meter suits users seeking bidirectional readings, while the handheld kit is aimed at field work across a broad stated pipe range. CGOLDENWALL and Bonvoisin offer portable meters with data logging; the EnSyuSuMa TUF-2000B adds listed signal inputs and outputs for system integration.
| Product | Best For | Key Consideration |
|---|---|---|
| TUF-2000B Digital Meter | Bidirectional flow readings | Confirm pipe and installation requirements |
| Handheld Kit With Three Transducer Sets | Field measurement across varied pipe sizes | Check the appropriate transducer for the pipe |
| CGOLDENWALL Handheld Meter | Logged readings and PC data transfer | Couplant is not included |
| Bonvoisin Handheld Meter | Selectable liters or gallons | Software is needed to download recorded data |
| EnSyuSuMa TUF-2000B | Signal input and output connections | Listed sensors cover specified pipe ranges |
TUF-2000B Digital Water Flow Meter
This clamp-on TUF-2000B meter is best for users who need readings of forward and reverse flow. Its listed features include TS-2 and TM-1 transducers, an LCD, and a stated pipe range of DN15–700 mm. The noninvasive sensor approach is intended to measure flow without cutting into the pipe.
The product listing specifies flow-meter accuracy of ±1.0% and water-meter accuracy of ±2.0%. It also lists fluid temperatures from 32°F to 320°F, a maximum turbidity of 20,000 ppm, and positive, negative, and net cumulative flow or heat measurements. Choose it if these measurement capabilities match the application.
Consideration: The listing gives different accuracy figures for flow-meter and water-meter modes. Confirm which specification applies to the intended measurement and installation.
Handheld Meter With Three Transducer Sets
This portable kit is best for technicians measuring different pipe sizes at multiple sites. It includes small, medium, and large clamp-on transducer sets and states a DN15–DN6000 pipe range. The non-invasive design is presented for applications including water supply, HVAC, wastewater, irrigation, and industrial pipeline inspection.
The LCD displays total flow, instantaneous flow rate, flow velocity, and working status together. That makes it useful when an operator needs several readings on the device during a field check. Choose this kit if portability and multiple transducer options are priorities.
Consideration: The wide stated pipe range does not mean every transducer works across that entire range. Match the included sensor to the pipe dimensions and follow the device’s setup instructions.
CGOLDENWALL Handheld Flow Meter
The CGOLDENWALL meter is best for users who want a portable instrument with onboard logging and PC data output. Its S1 and M2 transducers cover listed pipe ranges of DN15–100 mm and DN50–700 mm, respectively. The display can show cumulative flow, instantaneous flow, velocity, and working status.
The listing states ±1% accuracy, 0.50% linearity, and 0.20% repeatability. Its logger stores up to 2,000 lines, with logged data downloadable through an RS232 interface. Choose it if transferring stored readings is part of the workflow.
Consideration: Couplant is not included. The listing suggests alternatives such as petroleum jelly or dish soap, so check the manufacturer’s instructions for an appropriate coupling material before measurement.
Bonvoisin Handheld Ultrasonic Meter
This Bonvoisin meter is best for buyers who need to switch displayed units between liters and gallons. It includes S1 and M2 sensors for listed pipe sizes from DN15 to DN700 mm and uses a clamp-on setup that does not require cutting the pipeline, according to the product information.
The specifications list ±1% accuracy, 0.50% linearity, 0.20% repeatability, a velocity range of 0.1–6 m/s, and a temperature range of 32°F to 230°F. Its internal logger can record up to 2,000 groups of measurements. The listing identifies seawater, alcohol, industrial liquids, and sewage among possible applications.
Consideration: The listing says software is required to download recorded data and instructs buyers to contact the seller for it. Confirm the data-transfer process if PC access is essential.
EnSyuSuMa TUF-2000B Flow Meter
This TUF-2000B package is best for buyers comparing a fixed host meter with specified sensor and connection components. The listed package includes a host, TS-2 transducer for 20–100 mm, TM-1 transducer for 50–700 mm, signal cable, steel belts, connection terminal, screwdriver, silicone sealant, and manual.
Its listed outputs include one 4–20 mA output, one Oct Pulse output, and one relay output. It also lists three 4–20 mA inputs and describes a heat-measurement capability. The product listing names water, seawater, sewage, oil, and alcohol as example liquids.
Consideration: The product is listed with IP67 protection, not IP68. Check the installation environment and required protection level before choosing it.
Buying Guide: How To Choose An Ultrasonic Water Flow Meter
What pipe size and sensor range do you need?
Start with the pipe’s outside dimensions and the meter’s supported range for each transducer. A product’s overall range may depend on using different sensors. For example, the CGOLDENWALL and Bonvoisin listings separate S1 and M2 pipe ranges, while the EnSyuSuMa package specifies ranges for TS-2 and TM-1 sensors. Confirm the correct transducer before purchase.
Do you need a portable or installed setup?
Handheld meters are suited to measurements at different locations. A host-based TUF-2000B package may be preferable when its listed signal connections match an existing measurement setup. Check the product details for included cables, sensors, mounting parts, and display type rather than assuming all kits contain the same accessories.
Which readings and data features matter?
Compare the displayed values and data options with the task. Some products list instantaneous and cumulative flow or velocity; the first meter also specifies forward and reverse measurement. If records must be retained, look for logger capacity and a clear transfer method. RS232 appears in the CGOLDENWALL listing, while Bonvoisin says software is needed for downloads.
How should you compare accuracy and operating limits?
Read the accuracy statement alongside its measurement mode and stated operating ranges. Do not assume different models’ accuracy claims are directly interchangeable. Check fluid temperature, velocity, and other listed limits against the application, and follow the manufacturer’s instructions for sensor placement and setup.
Frequently Asked Questions
How does a clamp-on ultrasonic water flow meter work?
It uses transducers attached to the outside of a pipe to measure liquid flow ultrasonically. The listed products describe this approach as noninvasive, so measurement does not require cutting the pipe.
Can one meter measure forward and reverse water flow?
Some can. The TUF-2000B digital meter in this list explicitly states bidirectional measurement and reports positive, negative, and net cumulative flow or heat.
Do ultrasonic flow meters need a specific transducer?
Often, the sensor must match the pipe’s size and the meter’s specified range. Check the transducer range in the product details before setting up a measurement.
Do these meters store flow readings?
Some do. The CGOLDENWALL and Bonvoisin listings each state that the internal logger can store up to 2,000 lines or groups of measurements. Their data-transfer details differ, so verify the method you need.
Is coupling material included with every meter?
No. The CGOLDENWALL listing specifically says couplant is not included. Check the package details and the manufacturer’s setup directions before use.