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Single-use flow sensor based on the differential pressure principle employing the radial expansion of a low-cost silicone tube

机译:基于差压原理的一次性流量传感器,采用低成本硅胶管的径向扩展

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For the first time, we present a flow sensor based on the differential pressure principle consisting of exchangeable low-cost consumable parts, to minimize the risk of cross-contamination in medical applications, for example. In our case, the consumable component consists of two thin-walled elastic silicone tubes connected by a rigid capillary that can be exchanged easily and cost-effectively after use. We characterized the current flow sensor prototype in the range from 0 up to 50 μL/s for water and aqueous glycerin solutions with glycerol concentrations of 20 wt.-% and 60 wt.-% with known viscosities. The sensor showed a good consistency with the reference sensor, a linear correlation coefficient of minimal R(x,y) = 0.98 and a sensor resolution of 0.4 μL/s.
机译:首次,我们提出了一种基于差压原理的流量传感器,该流量传感器由可互换的低成本易损件组成,以最大程度地降低医疗应用中的交叉污染风险。在我们的情况下,消耗部件由两个通过刚性毛细管连接的薄壁弹性硅胶管组成,使用后可以轻松,经济地进行更换。我们对水和甘油浓度为20 wt。%和60 wt。%的甘油水溶液(已知粘度)的电流传感器原型的范围从0到50μL/ s进行了表征。该传感器显示出与参考传感器的良好一致性,最小R(x,y)= 0.98的线性相关系数和0.4μL/ s的传感器分辨率。

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