Non-invasive flow measurements for the maritime sector.
In the maritime industry, enormous volumes of fuel, cooling water, and oil flow through kilometers of piping every day. These pipes are often difficult to access and cannot simply be cut open or interrupted. Clamp-on ultrasonic flowmeters offer the ideal solution here: reliable, accurate flow measurements without process interruption or risk of leakage.
Our solution: Clamp-on ultrasonic flowmeters.
As specialists in non-invasive flow measurements, we supply both fixed and portable flow meters, specially developed for the harsh maritime conditions on board commercial and military vessels.
Key benefits:
- Non-invasive: measure from the outside of the pipe
- Highly accurate: transit-time technology for reliable clamp-on flow measurement
- Flexible: suitable for fuel, oil, water, cooling, and heating systems
- Cost-efficient: multiple measurements possible simultaneously (supply/return, differential)
- Robust: suitable for use in service workshops and offshore shipping
The right flowmeter for every application
- KATflow 150: Fixed installation, ideal for continuous fuel and oil consumption monitoring on commercial vessels and in shipyards.
- KATflow 200: Compact, lightweight, and portable. Widely used in maintenance and service work for measurements on fuel, oil, water, and cooling lines. Proven for use on naval vessels, submarines, and offshore platforms.
Typical applications
- Fuel and oil consumption monitoring
- Ballast water system inspection
- Inline flow meter testing and verification
- Fire suppression system inspection
- Pump and valve monitoring
- Leak and blockage detection
Field-proven reliability
Our ultrasonic flowmeters are used worldwide by renowned shipyards, shipping companies, and naval organizations, including:
IHC, Damen Shipyards, Wärtsilä, Lloyd’s Register, Royal Navy, and Stena Drilling.
From container ships to luxury yachts, cruise ships, tankers, and aircraft carriers, our technology delivers consistent measurement results, essential for safety and efficiency in the maritime sector in the Netherlands and Europe.
Why choose us?
We are the leading specialist in non-invasive ultrasonic flow measurements for shipbuilding and marine applications. With years of experience and clients in the Netherlands, Belgium, and the rest of Europe, we guarantee practical solutions, technical support, and proven measurement results.
Want to know which clamp-on flowmeter is best suited for your shipbuilding project or maritime application?
Contact us for a demo, advice, or a free quote.

KATFLOW 100
Standard fixed installation clamp-on ultrasonic flowmeter
KATFLOW 150
Advanced fixed installation clamp-on ultrasonic flowmeter
KATFLOW 170
Fixed installation clamp-on ultrasonic ATEX flowmeter
KATFLOW 200
Hand-held clamp-on ultrasonic flowmeter



