Flumes
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. Two of the seven flumes we have available are listed below.
Parshall
- Most widely used type of flume for permanent installations
- Standard design conforms to U.S. Department of the Interior, Bureau of Reclamation, Water Measurement Manual
- Available in throat widths of 1” to 180”
- Resistant to the effects of submergence
- 50% for 1″ – 3″ flumes
- 60% for 6″ and 9″ flumes
- 70% for 12″ – 96″ flumes
- 80% for 120″ flumes
- Self-cleaning in most circumstances (not recommend for sanitary use in 1” and 2” sizes)
- Available in nested configurations
- Available with end adapters to connect to existing pipe
- Simple flow meter calibration
- Maximum flow rates from 85.3 GPM – 467,200 GPM with standard wall heights
- Installation requires drop in conduit invert from inlet to outlet
HS/H/HL
- Standard design conforms to U.S. Department of Agriculture, Field Manual for Research in Agricultural Hydrology
- Available in a wide range of sizes from 0.4’ HS – 4.0’ HL
- Developed for agricultural runoff
- Approach section and inlet bulkhead available for connection to existing pipe
- Simple flow meter calibration
- Flat bottom for self-cleaning of small debris
- Wide range of flows
- Maximum flow rates from 36.0 GPM – 52,509.6 GPM
- Discharge must be unimpeded or spill freely from flume
- Cannot operate under submerged conditions
- Require 3-5 times the maximum head in straight channel upstream of the flume
