Mainstream Measurements

Ultrasonic Open Channel Flow Measurement

Intelligent Sensor Design with Built-In Integrity Monitoring

Mainstream Measurements specialises in open channel flow measurement, providing accurate and dependable ultrasonic solutions for water, wastewater and environmental monitoring applications. Developed from a strong research and engineering heritage, our instrumentation combines advanced ultrasonic technology with sophisticated signal processing, low-power electronics and intelligent algorithms. Mainstream systems are designed to deliver high-performance measurement while remaining practical to install, operate and maintain in demanding field environments.

At the heart of Mainstream technology is a focus on measurement integrity and intelligent self-diagnostics. Built-in sensor monitoring continuously assesses performance and signal quality, helping users confirm measurement integrity, identify changes in sensor performance and reduce maintenance requirements. From permanent monitoring installations to short-term field studies, Mainstream flowmeters provide a reliable and cost-effective solution for applications including rivers, streams, wastewater networks, treatment works and other open channel environments.

Industries & Applications

Why Mainstream Measurements?

Easy to Install

Mainstream flowmeters are designed to make open channel flow measurement straightforward. Using the area-velocity method means there is no need to install weirs or flumes, helping to reduce installation time, cost and disruption. Easy-to-use commissioning software and the ability to locate the velocity probe up to 500 metres from the system unit provide additional flexibility for challenging water and wastewater applications.

Measurement You Can Trust

A key difference with Mainstream is built-in sensor integrity monitoring and self-diagnostics. Sophisticated ultrasonic signal processing identifies verified velocity information while rejecting spurious signals, helping to ensure measurement integrity. Mainstream's unique Signal Quality reading shows the percentage of the received signal containing useful velocity information, providing an invaluable indication of flowmeter performance and helping operators identify changes before they become a problem.

High Performance, Fully Certified

Built on decades of research and development in ultrasonics, signal processing, low-power electronics and advanced algorithms, Mainstream flowmeters are engineered for reliable performance in demanding applications. With high sensitivity for clean water, velocity measurement from 10 mm/s to 5 m/s, better than 100:1 turndown, and no zero offset or drift, Mainstream provides a robust and cost-effective solution for water distribution, wastewater and environmental flow monitoring.