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DUC - Quick-Mount Clamp-on Ultrasonic Flow Meter for Liquids

DUC - Quick-Mount Clamp-on Ultrasonic Flow Meter for Liquids

Product Features

Easy-to-read User Interface with LED Backlight, QVGA Display
Quick-Mount-System with Space Bar for Ultrasonic Transducers, 0.5, 1 and 2 MHz
DSP Technology Reduces Signal Echoes and Dispersion Effects, Having a Positive Effect on the Signal to Noise Ratio
Portable and Stationary Versions Available
Applications within Power Plants, Water/Wastewater and Chemical Processing Industries
Certifications/Approvals: ATEX
Starting at
$4,627
Request Quote/Demo Flow Product Filter Schedule a Free Engineering Consultation

Clamp-on Ultrasonic Flow Meters for Portable or Stationary Installations

The KOBOLD DUC Clamp-on Ultrasonic Flow Meter is designed for non-contact and non-intrusive flow measurement for pipes up to 20 feet in diameter. It can be used in both stationary installations of a more permanent nature, or temporary installations that allow the meter to be used in a portable manner. Because the principle of measurement does not require any parts of the device to come in contact with the flow, it is also ideal for media with matter that might damage the sensitive measuring elements of other types of flow meter technology.

The DUC delivers precise measurements, is free of drift, does not require frequent maintenance, and does not need recurring calibrations. In fact the DUC is so effective, easy to use and transfer, and delivers such high accuracy that it is often used as a way to verify the accuracy of other inline flow meters within a process.

It also features compensation for changing process temperature and vicosities, ensuring accurate readings regardless of fluctuations. The DUC can also provide heat quantity measurement to measure the heat transfer of the process media.

Cost Saving Advantages

The DUC offers a clear cost advantage for large diameter process pipes as it does not require extensive amounts of materials to build, does not create significant shipping costs, and does not require extensive construction or system shut down time to install.

Ultrasonic Transit Time Technology Flow Meters

KOBOLD DUC Ultrasonic Transit Time Flow Meters use the effect of acceleration and deceleration of acoustic signals traveling in a moving liquid. Two ultrasonic clamp-on transducers are mounted externally on a pipe and produce an acoustic path. The transducers send and receive signals and the subsequent transit times are measured by an electronic flow transmitter. The signal is accelerated when there is flow in the forward direction. The return signal is slowed by the flow in the opposite direction. The difference in time between the two, together with the path length in between the two transducers, is then used to determine the average flow velocity. This principle is known as the acoustic time-of-flight principle.

The DUC emits a coded signal pattern (DSP or Digital Signal Processing) into the pipe. The received signals are then compared with the sent signals and only the signal pattern, which correlates with the original one, will be used for flow calculation for cross correlation based signal evaluation. The DSP calculation of the time-of-flight is a purely digital transit time measurement. To learn more about Ultrasonic Flow Meters and their advantages and limitations, visit our in depth article.

Other Ultrasonic Flow Meter Installation Types

KOBOLD also offers the DUK Compact Inline Ultrasonic Flow Meter that delivers a cost advantage for smaller process pipe diameter applications.

Product Specifications

Measurement Principle
Time-of-flight w/DSP (Transit Time Principle)
Flow Velocity Range
0...98 ft/sec
Pipe Size Range
3/8"...20 Feet
Temperature Range
-40...300 °F
Accuracy
up to 1% of Reading
Media Category
Liquid

Product Features

Easy-to-read User Interface with LED Backlight, QVGA Display
Quick-Mount-System with Space Bar for Ultrasonic Transducers, 0.5, 1 and 2 MHz
DSP Technology Reduces Signal Echoes and Dispersion Effects, Having a Positive Effect on the Signal to Noise Ratio
Portable and Stationary Versions Available
Applications within Power Plants, Water/Wastewater and Chemical Processing Industries
Certifications/Approvals: ATEX

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Who Are We?

We are the industrial instrumentation partner of choice with comprehensive solutions for measuring what matters to you.

For over 40 years, KOBOLD has been a value-driven leader in process measurement and control solutions. We offer one of the industry’s broadest lines of sensors, switches, and transmitters to measure and control flow, pressure, level, and temperature.

We offer excellence in engineering, high value products, and exceptional customer partnerships that last beyond the sale. Because we design, manufacture, sell, and provide support for our products, you can be assured that you and your application are in expert hands.

Why Choose KOBOLD?

Our Approach: Partnership for the "Long Haul"

We aren’t just interested in selling you instrumentation. You are our priority. Trying to wade through the extensive technologies and options can be a bit intimidating. You don’t have to figure it out on your own. We are here to partner with you, providing free advice from our in-house engineering experts who have decades of collective experience.

We are old-fashion in our beliefs about what doing business should look like. We still have someone answering our phone who will quickly direct you to the right person. We still believe in delivering true value and not subpar quick-fix products that become headaches down the road. We build our products like we build our relationships, for the "long haul".

For certain large-scale projects, we are also able to provide demo instrumentation so you can be confident that our solution is the right fit for your application. We want our products to be the best fit as much as you do. There is no project too large or too small for us.

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We believe that "Made in the USA" still means something. Our products are built with that in mind as we aim to exceed the standards and ideals of quality-focused US manufacturing. We offer the best of both worlds. German engineering is still known as being among the finest and we are proud to build some of the most innovative products in the world. We are also focused on sourcing practices that allow us to provide higher quality components, shorter lead times, and longer lasting products than other instrumentation manufacturers.

Comprehensive Product Line: We Don't Have to "Force a Fit"

We offer one of the industry’s broadest lines of sensors, switches, and transmitters to measure and control flow, pressure, level, and temperature.

We have historically set the bar for innovation and excellence, helping to shape the field of industrial instrumentation into what it is today. Our technologies offer a solution-oriented way to control the most diverse and complex variables and can be easily integrated into a wide variety of systems in many industrial and commerical sectors.

We will not try to sell you any instrumentation that isn’t ideally suited for your application. Because we are unique in the extensiveness of our product line, we don’t have to try and “force a fit” just to make a sale like other companies with limited product lines. In the event we do not have the right solution, we will do our best to point you in the right direction.

Unique/Difficult Applications & Customizations: We Do What They Can't

While we offer a wide variety of standard instrumentation, we are also able to handle unique, difficult, or challenging applications that others can not. Our familiarity with exotic materials allows us to offer solutions for variables that are frequently hard to accommodate. Because we are the manufacturer, we also have the flexibility of being able to provide customized solutions in certain circumstances, based on the exact application needs.

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