ST502 Wall-Mounted Ultrasonic Flow Meter for boiler

The ST502 is a high-performance ultrasonic flow meter that uses transit-time technology to deliver accurate and reliable flow measurement across a wide range of liquid types and pipe sizes. Built with industrial-grade materials and advanced digital signal processing, it is designed for long-term, maintenance-free operation.

The clear menu display makes setup and operation straightforward, while clamp-on transducers provide flexibility across diverse applications. Because the sensor mounts externally, the ST502 never contacts the fluid — eliminating risks of contamination, pressure loss, or leakage.

• Measures actual flow and total consumption of various liquids
• CNC-machined process with magnetic open-cover technology — no screws required
• Adaptive signal processing algorithms optimize performance for accurate measurements even in challenging flow conditions
• Clear LCD display interface with alarm function for easy operation and debugging
• Transit-time ultrasonic technology enables bidirectional flow measurement by precisely timing ultrasonic signals upstream and downstream
• Built-in 2G SD card for historical flow data storage and system optimization analysis
• Built-in keypad and simple menu system for fast configuration of pipe diameter, pipe material, liquid type, and measurement units

TVT represents a cutting-edge approach to ultrasonic flow measurement, combining the principles of transit-time ultrasonics with the capability to harness the vortex shedding phenomenon. This innovative integration enhances accuracy, versatility, and performance, making it well-suited for a wide range of applications across various industries — particularly where precise flow measurements are required under varying flow conditions.

TVT technology excels in applications where fluid flow conditions vary between laminar and turbulent. The incorporation of vortex shedding data enhances accuracy in challenging flow environments.

TVT technology is versatile and suitable for a wide range of fluid types, including liquids with varying viscosities and densities.

The Flo-Instruments ST502 offers highly accurate and repeatable flow measurement for liquids at an economical price. Its strong metal case, combined with outstanding transducer performance and high industrial-grade materials, makes it ideal for pipes ranging from 1" (25 mm) up to 200" (5000 mm) in diameter. IP68 sensors are easy to install and require no pipe cutting, reducing installation and labor costs. The simple interface makes operation highly convenient.