KATflow 100Compact clamp-on ultrasonic flow transmitter with a robust and practical design for permanent installation and flow measurement on single pipes. Its small size allows the installation in areas where other flowmeters would not be practical.

In spite of its relative simplicity the KATflow 100 (by Katronic™) offers the user a wide range of input, output and communication interfaces such as RS 485, Modbus and the more traditional 4-20mA and open-collector pulse. The varied functionality and simple operation make it the perfect transmitter for large scale projects and allow configuarations to suit specific customer requirements. As a special solution we can offer the KATflow 100 without local display, with a hand-held programming device.

This flow meter is especially suitable for budget related projects, in comparison to the more advanced KATflow 150 and KATflow 170.

  • Cost effective solution
  • Ideal for large scale projects
  • Sturdy aluminium enclosure
  • Intuitive, easy menu and Setup Wizard
  • Audible Sensor Positioning Assistant
  • Bi-directional measurement (Totaliser function)
  • Diagnostics function
  • Real time data transfer
  • Pipe diameter range: 10 mm to 3000 mm
  • For pure, clean, dirty and aerated liquids
  • Temperature range sensors: -30 °C to +80 °C (-22 °F to +176 °F)
  • Accuracy: ±0.5 % (velocity)
  • Special “P” sensors for simple applications – optional
  • Process outputs incl. Modbus and HART* – optional
  • Heat quantity measurement function – optional
  • Katronic™

* HART is a registered trademark of the HART Communication Foundation

  • Water and wastewater
  • Demineralised water
  • Large scale metering projects
  • Monitoring and controlling of HVAC systems
  • Hydraulic system flow measurements
  • Fuel consumption on board ships
  • Clean room applications
  • Automated process control
  • Internal data logger : 100,000 measurements times 10 variables = 1 million measurement data
  • KATdata + software for downloading and visualizing all data from the device onto your computer. Both numerical and real-time graphs
  • Send data: via the RS 232 connection, or via an optional USB cable
Audible Sensor Positioning Assistant. This intuitive system provides visual and audible indications while mounting the (paired) sensors.
Because of its bi-directional operation the KATflow 100 achieves the highest achievable accuracy with 0.5%.

This ultrasonic flow meter operates based on transit time difference technology. This makes the device highly accurate, providing reliable flow data for almost any liquid, independent of the electrical conductivity of the medium.


We can imagine that you are you not conducting flow measurements on a regular base. Therefore, with us you can rent the KATflow 100 per day or per week . Do the measuring yourself or leave it in the capable hands of our service engineers. We are happy to assist you with technical advice and support !