A Differential Pressure Instrument with Wireless Telemetry for In-Situ Measurement of Fluid Flow across Sediment-Water Boundaries

被引：9

作者：

Gardner, Alan T. ^{[1
]}

Karam, Hanan N. ^{[2
]}

Mulligan, Ann E. ^{[3
]}

Harvey, Charles F. ^{[2
]}

Hammar, Terence R. ^{[1
]}

Hemond, Harold F. ^{[2
]}

机构：

[1] Woods Hole Oceanog Inst, Dept Appl Ocean Phys & Engn, Woods Hole, MA 02543 USA

[2] MIT, Dept Civil & Environm Engn, Cambridge, MA 02139 USA

[3] Woods Hole Oceanog Inst, Marine Policy Ctr, Woods Hole, MA 02543 USA

来源：

SENSORS | 2009年 / 9卷 / 01期

关键词：

Pressure sensor; wireless; hydrology; data logger; oceanographic instrumentation; GROUNDWATER;

D O I：

10.3390/s90100404

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

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 H(2)O 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.

引用

页码：404 / 429

页数：26

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