The Parshall flume is the best known and most widely used primary device for monitoring water in open channels and non-full pipes. It is used to measure municpal sewage, industrial effluent, dam seepage, storm water, irrigation / agricultural flows, watersheds, and more!
Parshall flumes offer a number of distinct advantages:
- Wide range of sizes from 1-inch to 50-feet to handle most flows
- Can be factory built or formed on site
- Suitable above grade and below grade applications:
- Integrated flume stands
- Flume enclosures
- Curved flume end adapters into existing manholes / vaults
- Factory integrated in Packaged Metering Manholes
- Most commonly used flume type in North America
- Little to no operator training required
- Short-throated flume
- Single point of measurement
- Floor of flume to water surface
- Supported by all major open channel flow meter manufacturers
- National and international dimensional / operational standards
- 90 years of research and practical application experience
- Available in a range of materials to suit most budgets and application needs:
- Aluminum – lightweight and durable
- Fiberglass – tight dimensional tolerances, lightweight, corrosion resistant
- Galvanized steel - durable and low cost
- Stainless steel - high resistane to corrosion and abrasion, extremly durable
- Corrections can be made for:
- Submegence and settled / non-level installations
- Modified layouts available:
- USGS Portable Parshall (discharge section removed)
- Montana (throat and discharge sections removed)
- Shortened and extended sidewalls
- Nested configuraitons for plant expansions, subdivision build-outs, and seasonal flows
- Available with end adapters to monitoring of piped flows
- Extensive array of accessories and options to accomodate most site needs
- Suitable for portable or permanent installations
