Permanent Ultrasonic U3300 Clamp-On Flow Meters



Clamp-on Ultrasonic Flowmeter with a Wall-mounted Display

The Micronics Clamp-on Ultrasonic Flowmeter has a Wall-mounted Display that can help you. First, the electronics of the Ultraflo U3300 flowmeters are in an IP65 enclosure that is also the display. Second, the display has a graphic display, keypad, sensors, and output connections. Third, programming the flowmeter is easy. Just choose “Quickstart” and follow the instructions in your preferred language. The display always shows flow information, signal strength, time, and date. It can also show flow readings in both directions and give you lots of information about the measurement. If you need a clean meter, this one is great!

Those looking for a sanitary meter should look no further!

The meter supports IP68 (waterproof) transducers, making it suitable for use in washdown environments. Additionally, high-temperature transducers are available as an option for high-temperature applications such as condensate return, and they can handle temperatures up to 392°F. The meter comes standard with 32 feet of sensor cable. Permanently mounted clamp-on ultrasonic flowmeters provide accurate flow rate measurements using ultrasonic waves and are both easy to install and maintain. These meters prove ideal for a variety of applications, including water and wastewater treatment, industrial processes, irrigation systems, and fuel metering. The flow rate measurement method involves sending ultrasonic waves and measuring the time it takes for the sound wave to travel from one transducer to the other. The transit-time difference and the distance between the transducers are used to calculate the flow rate.

These efficient and non-intrusive meters offer more accuracy and safety compared to traditional flowmeters.

  • Full Pipe
  • Clear Fluid (Less than 3% Undissolved Solids)
  • Permanent Application (but non-invasive)
  • Cross-Correlation Transit Time Measurement
  • Flow Range 0-20 M/S bi-directional
  • Data Logging
    • 100,000,000 Data Points
    • USB to CSV file
  • 3 X Pulse Outputs Dry Contact and 1 X mA Outputs
  • A Transducers 0.51-4.5″ OD Pipe
  • B Transducers 2-79″ OD Pipe
  • Optional IP68 (waterproof transducers)
  • Optional High Temp Transducers (392°F)
  • Optional Modbus Output

U3300 Brochure

U3300 User Manual

Permanently Mounted Clamp-On Ultrasonic Flowmeters

Moreover, clamp-on ultrasonic flowmeters do not require direct contact with the fluid being measured.  This makes them non-invasive. In addition, their high accuracy and reliability are well-known. These devices are used in a variety of applications, from wastewater treatment to industrial processing. Furthermore, they are easy to install and maintain, which makes them a cost-effective option for many industries.

How Do Permanently Mounted Clamp-On Ultrasonic Flow Meters Work?

Furthermore, installing permanently mounted clamp-on ultrasonic flow meters is simple, requiring the use of a clamp-on mechanism. Once ultrasonic transducers are attached to the exterior of the pipe, they send ultrasonic waves through the pipe wall into the fluid. The waves then reflect off particles or bubbles in the fluid and return to the transducers. It is important to note that individuals measure the time for the waves to travel from the transducer to the fluid and back to calculate the velocity of the fluid.

Once the velocity is determined, the flow rate is calculated using the following formula:

Flow rate = Velocity x Cross-sectional area of the pipe

Permanently mounted clamp-on ultrasonic flow meters support a wide range of pipe materials, such as metal, plastic, and concrete, and they work well with various fluids, such as water, oil, and chemicals.

Advantages of Permanently Mounted Clamp-On Ultrasonic Flow Meters

The installation of permanently mounted clamp-on ultrasonic flow meters does not involve cutting the pipe or draining the fluid, making them non-invasive. They suit applications where it is not possible or practical to shut down the flow. Achieving a high accuracy rate of up to +/- 1% is possible with calibration. Maintenance requirements are minimal as they lack moving parts that can wear out or require lubrication, and they resist wear and tear from the fluid. Permanently mounted clamp-on ultrasonic flow meters are versatile enough to measure the flow rate of various fluids.  Therefore, they are used on a wide range of pipe sizes and materials.

Applications of Permanently Mounted Clamp-On Ultrasonic Flow Meters


The permanent mounting clamp-on ultrasonic flow meter is a versatile and accurate flow meter type that finds wide-ranging applications. People use it for water and wastewater treatment, HVAC systems, chemical processing, oil and gas production, food and beverage production, and power generation. These flow meters do not need invasiveness, are easy to install, and require very little maintenance. If you are looking for a reliable and accurate method to measure fluid flow rate in pipes, you might find the permanent mounting clamp-on ultrasonic flow meter the right choice.

Additional information

Weight 8 lbs
Dimensions 19.1 × 12.6 × 5.9 in
U3300 Power

24 Volt Power, 110 Volt Power

U3300 Transducer Size

"A" Transducers 0.5-4.5", "B" Transducers 2-79"

U3300 Transducer Type

Standard IP56 275°F, IP68 Waterproof, HT High Temp (392°F)

U3300 Cable Length

Standard 10 Meters, Add 10 Meters (20 total), Add 20 Meters (30 total)

U3300 Data Logging

No Data Logging, Data Logging

U3300 Modbus

With, Without


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