Parshall Flumes are primary flow devices with a wide range of applications, for measuring open channel flow. They can be used for flow measurement in creeks, irrigation and/or drainage channels, sewer outfalls, waste water treatment plants, etc. Arkon parshall flumes are made of polypropylene and are resistant to air temperatures up to 80°C (however, water inside the flume must not get frozen).
Parshall flumes can stand up well the solutions of inorganic salts, acids and bases that do not exhibit strong oxidation properties, and a majority of organic solvents. Maximum size of suspended solids is limited to 80% of the throat width (dmax = 0.8 w). Arkon Flow Systems also provides checking of your hydraulic projects of parshall flumes for free and hydraulic calculation of parshall flumes installations (via email).
- A relatively low energy loss (3–4 times lower than in sharp-crested weirs)
- A small sensitivity to a velocity distribution in an approach channel
- Flow rate measurement even under drowned conditions
- Velocities inside a Parshall flume are high enough to prevent it from the deposition of sediments or accumulation of debris
- Minimum maintenance requirements
- A wide range of flow rates
- A long lifetime