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  • No moving parts,maintenance free
  • No risk of leakage,No risk of corrosion
  • No need to cut pipe
  • Low cost ownership
  • Versatile outputs and communication
  • Easy to install without special  skills
  • No Max pressure limite since pipe can bear it
  • Wide flow range
  • Low flow velocity setup
  • Suitable for most of pipe materials

Clamp on ultrasonic flow meter is famous for its unique installing way,and this way provides non intrusive flow measurement for closed pipe.  ABEST have involved with ultrasonic flow meters for decades of years and accumulated strong power in developing/manufacturing. Clamp on ultrasonic flow meters have been ever expensive and many users have no enough budget to benefit from it.After 10 years hard working, our experienced team have been successful to reduce its cost sharply.If you are looking for clamp on flow meters with cost-effective solution, please feel free to contact us. Except regular models,we are able to provide complete customizing OEM service from hardware to software.  This service can improve your brand credit and protect your market to avoid competition. As a professional manufacturer, our clamp on flow meters have been well-established with global clientele.

Clamp on ultrasonic flow meters are often called as clamp on flow meter or clamp on water flow meter.It can measure liquid volume flow from outside of closed pipe. Clamp on flow meter is developed on the basis of ultrasonic non-invasive technology.Ultrasonic technology mainly have two: transit-time and doppler. Transit-time flow is used to measure clean liquid, or liquid with average bubbles or particles. Doppler is mainly for dirty liquid flow measurement.

Clamp on installing way doesn't need to cut pipe,so it doesn't need to stop flow, and won't influence normal manufacturing job. The flow meter doesn't contact water directly, and does't pollute fluid. Clamp on feature makes it easy and convenient to install and operate,and it also reduces the installing cost and material cost. Because no pipe cutting,there is no risk of leakage,and almost no maintenance cost in future. Without moving parts,users are no need to replacement parts, because no mechanical wearing.

Main Specifications:

  • Accuracy:+/-1% or 2%
  • Pipe size: DN20-4500mm
  • Velocity: 0-12m/s(bi-direction)
  • Output:RS485,relay,OCT pulse,4-20mA,0-20mA,frequency
  • Communication protocol: Modbus,Hart,M-bus
  • Temperature range of fluid: <=155 Deg.C.
  • Power supply: 9-36vdc,100-250vac,solar power
  • Working current:50mA
  • Data logger: built-in data logger. 4G data logger optional
  • Protection class: flow sensors IP68. Flow converter: IP65. IP67 or IP68 can be ordered.
  • Language: English/Italian

In order to make ultrasonic flow meter work properly, you at least require to order one electronic ultrasonic flow converter and one set of flow sensors.

Main AC/DC Fixed Type

Wall mounted ultrasonic flow meter has a rugged IP65 water-proof enclosure.It supports power of AC90-250v/DC8-36v. Over 7 generations are released to has proved its strength. Standard Modbus makes it network easily. A built-in SD card data logger is optional,supporting Max 8G. The latest data management software is optional.

Low Cost Ultrasonic Flow Meter

The DIN-Rail flow meter is designed for large quantity application with low budget.Of course, small project can select it as its price is very low. But its function is still powerful and supports various flow sensors,too.The low cost flow meter can be used for heat flow meter/BTU meter. Though low price,,but still powerful.

Portable Ultrasonic Flow Meter

Handheld ultrasonic flow meter can be held by one hand only.Built-in battery can work 12 hours after recharging.With built-in data logger and data management software, data can be easily stored to computer for further processing.


Relay switch outputs can make clamp on flow meters work as clamp on flow switch. The relay switch is weak current and need an intermediate relay to control strong current equipment,e.g. pump.

More Details to Know

Clamp on ultrasonic flow meters mainly have three parts: flow converter,flow transducer(flow sensor) and special connection cable.Flow converter is the main unit and in charge of processing.The function of converter is similar to brain of human being. Flow transducer is sensing parts to detect flow signal. Flow signal is sent to converter by cable. Then, converter processes related signal and get corresponding data.Digital signal process(DSP) is introduced to ensure the meter performance. If you want to buy clamp on ultrasonic flow meter,it is better to buy the 3 parts together.
Clamp on flowmeters mainly have two big types:fixed type and portable type. Fixed type, as its meaning, is fixed installing.It is used to monitor one pipe for long term.It includes several different flow converter,e.g.wall mounted,desktop,flow transmitter,low cost din-rail mounted,etc. Portable flow meters mainly have handheld type and standard version. Handheld type has a compact size and light-weight.It can be held by one hand. Standard version has a longer battery life and bigger size body. It can be equipped with mini printer for local data output.Portable ultrasonic flowmeters are used for flow check and comparison.
In the past, when mentioned flowmeter, first concept was inline type like water meter. Even by now, many technicians still keep such memory. But as the quick development, more and more users prefer to select clamp on flowmeter as their priority choice.Several years ago, the price of clamp on meter was very expensive and only VIP users can afford it. Thanks to technology improvement, several companies have devoted to reduce its price. As one of main player in the industry, we have been working hard for over 20 years.Luckily,we have sharply made its price lower. This can make more users have opportunity to experience such advanced flow devices.
Generally speaking,clamp on flow meter is your top consideration as you have decided ultrasonic flow meters. Clamp on type doesn't need to cut pipe and avoid many complicated jobs.You will feel so easy and comfortable to install clamp on flowmeter. But if the pipe condition is very poor or not suitable for ultrasound, e.g. serious rusted, cement pipe,etc, clamp on type won't be able to work. At this time, insertion flow meter is a better choice. It just requires to drill a very small hole in the pipe and can be installed without flow stop. Meanwhile, its weight is very small and can save shipping cost. Insertion flowmeter almost has no requirement for pipe material. Inline flow meters are the most common type and many flow devices utilize inline structure. But inline ultrasonic flowmeter belongs to real digital flow meter. It has no moving parts and have a higher accuracy and longer life.Comparing with mechanical flow meters,it also has other unique advantages. Thus,inline ultrasonic flowmeter is still one good solution.
Inline and Insertion Flow Meter Available