A differential pressure instrument with wireless telemetry for in-situ measurement of fluid flow across sediment-water boundaries
Gardner, Alan T.
Karam, Hanan N.
Mulligan, Ann E.
Harvey, Charles F.
Hammar, Terence R.
Hemond, Harold F.
MetadataShow full item record
An instrument has been built to carry out continuous in-situ measurement of small differences in water pressure, conductivity and temperature, in natural surface water and groundwater systems. A low-cost data telemetry system provides data on shore in real time if desired. The immediate purpose of measurements by this device is to continuously infer fluxes of water across the sediment-water interface in a complex estuarine system; however, direct application to assessment of sediment-water fluxes in rivers, lakes, and other systems is also possible. Key objectives of the design include both low cost, and accuracy of the order of ±0.5 mm H2O in measured head difference between the instrument’s two pressure ports. These objectives have been met, although a revision to the design of one component was found to be necessary. Deployments of up to nine months, and wireless range in excess of 300 m have been demonstrated.
© 2009 The Authors. This article is distributed under the terms of the Creative Commons Attribution (3.0) License. The definitive version was published in Sensors 9 (2009): 404-429, doi:10.3390/s90100404.
The following license files are associated with this item:
Showing items related by title, author, creator and subject.
Foote, Kenneth G.; Hastings, Mardi C.; Ketten, Darlene R.; Lin, Ying-Tsong; Reidenberg, Joy S.; Rye, Kent (Acoustical Society of America, 2012-02)Potential physical effects of sonar transmissions on marine mammals were investigated by measuring pressure fields induced in a 119-kg, 211-cm-long, young adult male common dolphin (Delphinus delphis) cadaver. The specimen ...
On the calculation of wind stress curl over open ocean areas from synoptic meteorological data with application to time dependent ocean circulation Welch, Christopher Slocombe (Woods Hole Oceanographic Institution, 1972-02)The method used by N. P. Fofonoff for estimating wind stress curl from surface atmospheric pressure maps is developed for use with the National Meterological Center analysis grid. A formula is developed relating the wind ...
Payne, Richard E. (Woods Hole Oceanographic Institution, 1994-09)For approximately 1.5 year, daily observations of barometrc pressure were made with a varety of sensors and compared to readings from a Paroscientific Model 760-16B while all sensors were maintained at a temperature of ...