Model Performance of Water-Current Meters
By: J.M. Fulford
Edited by: Wahl T.L.Pugh C.A.Oberg K.A.Vermeyen T.B.Wahl T.L.Pugh C.A.Oberg K.A.Vermeyen T.B.
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Abstract
The measurement of discharge in natural streams requires hydrographers to use accurate water-current meters that have consistent performance among meters of the same model. This paper presents the results of an investigation into the performance of four models of current meters - Price type-AA, Price pygmy, Marsh McBirney 2000 and Swoffer 2100. Tests for consistency and accuracy for six meters of each model are summarized. Variation of meter performance within a model is used as an indicator of consistency, and percent velocity error that is computed from a measured reference velocity is used as an indicator of meter accuracy. Velocities measured by each meter are also compared to the manufacturer's published or advertised accuracy limits. For the meters tested, the Price models werer found to be more accurate and consistent over the range of test velocities compared to the other models. The Marsh McBirney model usually measured within its accuracy specification. The Swoffer meters did not meet the stringent Swoffer accuracy limits for all the velocities tested.
Suggested Citation
Fulford, J., 2002, Model Performance of Water-Current Meters, in Hydraulic Measurements and Experimental Methods, Estes Park, CO, 28 July 2002 through 1 August 2002, p. 365-373.
| Publication type | Conference Paper |
|---|---|
| Publication Subtype | Conference Paper |
| Title | Model Performance of Water-Current Meters |
| ISBN | 0784406553 |
| Year Published | 2002 |
| Language | English |
| Larger Work Title | Hydraulic Measurements and Experimental Methods |
| First page | 365 |
| Last page | 373 |
| Conference Title | Hydraulic Measurements and Experimental Methods 2002 |
| Conference Location | Estes Park, CO |
| Conference Date | 28 July 2002 through 1 August 2002 |