Ultrasonic flow metering in Water for Injection (WFI) loops

This comprehensive white paper provides an in-depth analysis of ultrasonic flow metering technologies for Water for Injection (WFI) loops in pharmaceutical manufacturing. It focuses on comparing two ultrasonic transit time solutions: traditional clamp-on flow meters and the innovative Surface Acoustic Waves (SAW) technology. Both utilise the transit time principle, but differ significantly regarding their implementation and performance characteristics. This paper aims to provide WFI system designers and operators with the technical knowledge required to make informed decisions on flow measurement technology selection.