Title :
An experimental study of vane coupling in Price current meters
Author :
Kenney, Bernard C.
Author_Institution :
Nat. Hydrology Res. Inst., Saskatoon, Sask., Canada
Abstract :
Sensors used to measure the magnitude of a current are frequently oriented into the flow with a direction vane. In the case of turbulent flow (or flow with wave motion superimposed), vane fluctuations may couple directly with the magnitude sensor. The degree of coupling is a function of the geometry of the current meter, the frequency-wave number characteristics of the flow oscillations and the bandwidth of the vane response. Many traditional oceanographic and hydrologic current meters are prone to coupling errors. In this paper, the results of field tests on the vane coupling in a Price 1210AA current meter are compared for two rivers with differing turbulence characteristics. The design of a new mount which totally eliminates vane coupling in the Price meter is also presented
Keywords :
flow measurement; flowmeters; hydrological equipment; hydrological techniques; oceanographic equipment; oceanographic techniques; 1210AA current meter; Price current meter; apparatus; coupling error; direction vane; equipment; flow measurement; flow measurement technique; flowmeter; hydrology; instrument; magnitude sensor; ocean current; river; sea; turbulence; vane coupling; Bandwidth; Blades; Current measurement; Fluctuations; Fluid flow measurement; Frequency; Geometry; Sea measurements; Sensor phenomena and characterization; Testing;
Conference_Titel :
Current Measurement, 1995., Proceedings of the IEEE Fifth Working Conference on
Conference_Location :
St. Petersburg, FL
Print_ISBN :
0-7803-2437-4
DOI :
10.1109/CCM.1995.516142
