Ultrasonic Flowmeters

The OPTISONIC 6300 stands for continuity and long term reliability. Flow measurement can be done anywhere and start-up is immediate.

The  OPTISONIC 6300 clamp-on flowmeter for liquids with its robust industrial construction and regreasing concept provides a revolutionary solution for easy handling. It can be fitted on the outside of piping to measure the flow rate of liquids.

The clamp-on flowmeter is a combination of one up to two OPTISONIC 6000 clamp-on sensor(s) and one UFC 300 ultrasonic signal converter. The overall functionality of the clamp-on flowmeter is the continuous measurement of actual volume flow, mass flow, flow speed, velocity of sound, gain, SNR and diagnosis value.


Minimised uncertainty
Optimised reliability
Minimal maintenance
Efficient regreasing concept
Easy sensor mounting
Installation wizard
All in one system


Power plants
Oil & Gas
Food & Beverages


Chemical addition
General process control
Cooling water circuits
Broad range of refined hydrocarbons
Potable water
De-ionized and demineralized water
Sanitary flow rate measurements
Purified water

Benchmark for custody transfer

Whether liquid or gaseous, aggressive or corrosive: KROHNE ultrasonic flowmeters measure a wide range of media.

In 1997, KROHNE introduced the ALTOSONIC V, the first high precision, calibratable ultrasonic flowmeter for the petroleum industry. The ALTOSONIC V’s five measuring paths can perform extremely precise and reproducible measurements regardless of the viscosity of the medium – a real quantum leap.

As the world’s leader in the field of ultrasonic inline flowmeters, our devices are at home in a wide range of industries. Whether it’s measuring cooling water and demineralized water in power plants, controlling dosing and mixing processes in the chemical industry or measuring liquid hydrocarbons in the oil and gas industry, you can put your absolute trust in KROHNE ultrasonic flowmeters in any situation.