What kind of flowmeter will work for gravity flow, partially filled pipe applications?
An open channel flowmeter is the only truly reliable way to measure low velocity gravity flow discharges that are usually partially filled pipe applications. The use of an open channel flowmeter (OCF) requires some type of primary measuring device such as a flume or weir. In such a device, the rate of flow is directly proportional to the level of the water moving through the flume or weir. The OCF measures flow by being programmed to recognize the type and size of the flume or weir (usually done by simply selecting from a built-in menu) and then converting that level to a rate of flow.USA BlueBook offers two different brands of open channel flowmeters: Greyline & GLI International. We also offer stock Parshall, Palmer-Bowlus and trapezoidal flumes.
