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TRACOM - RBC Flumes
RBC flumes were developed in the mid-1980’s to measure very low flows in furrows and small earthen channels. Although they are technically considered flumes, they are more accurately broad-crested weirs. In some ways, they are a mixture of Trapezoidal and Palmer-Bowlus flumes. RBC flumes have several distinct advantages, a few options and accessories, as well as various sizes and applications.
RBC flumes have important and distinguished characteristics that create a great deal of advantages over other flumes. Because their size is so small, they should be used where solids are not expected. In addition, channel slope should not exceed 1%. Some RBC flumes, such as those without inlet and outlet wingwalls will need grout to create a smooth transition from the channel into and out of the flume.
Because of these unique characteristics, RBC flumes offer the following advantages:
- The ability to accurately measure (+/-2%) very low flows
- Simple construction
- Trapezoidal cross-section (conforms to natural channels)
- Portability
TRACOM understands RBC flumes often require additional parts and accessories. This is why we offer certain options when purchasing flumes. With our RBC flumes, you can also request the following:
- Ultrasonic mounting brackets (only suggest for use with stilling wells or the 200mm size flume)
- Bubble tubes
- Stilling wells (detached)
- Staff gauges
- Inlet and outlet wingwalls
- Chemically resistant gel coat
- 50mm for 0.5 - 23 GPM
- 75mm for 2 - 68 GPM
- 100mm for 3 - 139 GPM
- 150mm for 8 - 391 GPM
- 200mm for 17 - 790 GPM
RBC flumes are designed with a combination of 5 different flumes which makes it easy to create, move and carry, and perform accurate measurements. Due to its unique characteristics, RBC flumes are used in several distinct applications where no solid materials are expected. These include:
- Edge-of-Field Runoff
- Dam Seepage
- Watershed Monitoring
- Irrigation Canals