Manufacturer: TRACOM Inc.
TRACOM offers all major flume types for open channel flow monitoring. Each flume has its own advantages and disadvantages and it is recommended that before selecting a flume that the characteristics of each flume be considered.
Parshall: Most widely used type of flume for permanent installations. Available in throat widths of 1” to 180”, resistant to the effects of submergence
Palmer-Bowlus: 4″-108″ sizes available (sized by throat width). Three primary styles:
Available with bulkheads to connect to existing pipe
HS / H / HL: Available in a wide range of sizes from 0.4’ HS – 4.0’ HL. Developed for agricultural runoff with a wide range of flows (maximum flow rates from 36.0 GPM – 52,509.6 GPM)
Trapezoidal: Initially designed to measure flows in irrigation channels, conforms to the normal shape of ditches (minimizing transition). Operates under higher degrees of submergence than Parshall flumes
Cutthroat: Similar to a Parshall flume except with flat bottom and no extended throat. Operates satisfactorily under both free and submerged flow conditions. Flat bottom for self-cleaning of small debris (1” and 2” throat widths not recommended for sanitary flows). Maximum flow rates from 52.6 GPM – 43,494 GPM Not available with standard end adapters to connect to existing pipe
RBC: Simple construction developed for use in small furrows and unlined canals, Five throat widths (50mm, 75mm, 100mm, 150mm, 200mm)
Montana: Design is a Parshall flume with the throat and discharge sections removed, and uses the same discharge table as a similarly sized Parshall flume. Available in throat widths of 1” to 144”. Self-cleaning in most circumstances (not recommend for sanitary use in 1” and 2” sizes)
Learn much more about each of these flumes at TRACOM.com