What's a Nested (Dual-Range) Flume?
Whether you call them nested, dual-range, or flume reducer inserts, nested flumes are an innovative solution to the problem of measure two substantially different flow ranges over time. By nesting a small, lower flow rate flume inside of a larger, higher flow rate flume; both…
How to Read a Parshall Flume
One of the advantages of the Parshall Flume is how easy it is to use! Unlike Palmer Bowlus or RBC Flumes, there are no zero height offsets to worry about. Just inspect the flume, find the point of measurement, and stick / gauge to the bottom of the flume. Under free-flow…
How Does an Ultrasonic Flow Meter Work?
Ultrasonic flow meters measure the level in a channel by transmitting a pulse of sound from the face of the sensor to the surface of the flow stream and measuring the time for the echo to return. The transit time corresponds to the distance between the face of the sensor and the…
What is a Flow Metering Manhole Anyway?
Reduced to its most basic elements, a flow Metering Manhole is a fiberglass (FRP) manhole with a factory integrated flow element to measure the flow of water in a pipe. Most Metering Manholes integrate flumes (typically Parshalls), although weirs and magnetic flow meters can also…
Sections Of A Flow Measuring Flume - Their Location and Function
In order to better understand flumes and how they can be applied to the measurement of flows in open channels it is useful to understand the sections of a flume and their specific functions.
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