Microflow Velocity Monitoring System Pulsar’s MicroFlow, Non-Contacting Liquid-Velocity Sensors, delivers accurate, repeatable, velocity measurement for liquid flow, either as a stand-alone device or as part of a complete area velocity measurement system.Area-Velocity calculation using MicroFlow provides a cost-effective flow measurement option compared to the installation of a Primary Measuring Device (PMD), such as a flume or weir, and provides a viable alternative where the hydraulics of a site does not allow for restriction within the channel.