The Q.Sonicmax ultrasonic gas flow meter is a multipath ultrasonic gas flow meter featuring the most accurate acoustic path configuration available on the market.

Since the publication of AGA Report No. 9 in 1998, multipath ultrasonic flow meters have become the dominant method for measuring flow in large-diameter pipelines, particularly for custody transfer of natural gas. This trend is driven by several factors—exceptional measurement accuracy, high turndown ratio, strong immunity to installation effects, and cost-effectiveness.

Despite their outstanding performance, like all meters, they can still be influenced by operating conditions. Specifically, upstream piping design and operational conditions determine the velocity profile of the fluid as it passes through the meter. To minimize these installation effects, the Q.Sonicmax meets and exceeds OIML accuracy Class 0.5.

How does it work?

The Honeywell Q.Sonicmax USM is the first 8-path meter to combine reflected paths with direct paths, resulting in exceptional noise immunity and highly detailed flow profile recognition. Thanks to this unique, patented path configuration, the device delivers the lowest possible uncertainty and the broadest diagnostic capabilities. The reflected paths, with their sophisticated diagnostic functions, enable the meter to quickly identify swirl, contamination, or liquid within the meter. The direct paths enhance robustness against higher valve-induced noise and ensure reliability in CO₂-rich applications.
Integrated pressure and temperature sensors ensure accurate Reynolds number calculation and dynamic meter body correction. This provides unparalleled insight into the flow profile and maintains the lowest uncertainty under all conditions.

What problems does it solve?

Market-leading ultrasonic metering technology, advanced diagnostics, and user-friendly software deliver the highest levels of accuracy, confidence, cost-effectiveness, and long-term reliability. The Q.Sonicmax provides unmatched flow profile awareness and maintains the lowest uncertainty in all scenarios. Compliance with OIML accuracy Class 0.5 is achieved without requiring any standard deviation allowances or flow rate restrictions.