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首页> 美国卫生研究院文献>Sensors (Basel Switzerland) >A Differential Pressure Instrument with Wireless Telemetry for In-Situ Measurement of Fluid Flow across Sediment-Water Boundaries
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A Differential Pressure Instrument with Wireless Telemetry for In-Situ Measurement of Fluid Flow across Sediment-Water Boundaries

机译：具有无线遥测功能的差压仪器用于就地测量跨沉积物-水边界的流体

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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.
机译：在自然地表水和地下水系统中，已经建立了一种仪器来连续就地测量水压，电导率和温度的微小差异。如果需要，低成本的数据遥测系统可以实时提供岸上数据。该设备进行测量的直接目的是在复杂的河口系统中连续推断穿过沉积物-水界面的水通量。但是，也可以直接用于评估河流，湖泊和其他系统中的沉积物-水通量。该设计的主要目标包括低成本和仪器两个压力端口之间测得的压头差精度达到±0.5 mm H2O左右。尽管发现有必要对一个组件的设计进行修改，但已经实现了这些目标。已经展示了长达9个月的部署以及超过300 m的无线范围。

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