An Affordable Open-Source Turbidimeter

Sensors

Christopher D. Kelley²  Alexander Krolick¹  Logan Brunner²  Alison Burklund²  Daniel Kahn²  William P. Ball² 

[1] Sibley School of Mechanical and Aerospace Engineering, Cornell University, 108 Upson Hall, Ithaca, NY 14853, USA; E-Mail:;Department of Geography and Environmental Engineering, Johns Hopkins University, 3400 N. Charles St, Ames 313, Baltimore, MD 21218, USA; E-Mails:

关键词: turbidity;    affordable water treatment monitoring;    open-source hardware;    Arduino;   

DOI  :  10.3390/s140407142

来源: mdpi

【 摘 要 】

Turbidity is an internationally recognized criterion for assessing drinking water quality, because the colloidal particles in turbid water may harbor pathogens, chemically reduce oxidizing disinfectants, and hinder attempts to disinfect water with ultraviolet radiation. A turbidimeter is an electronic/optical instrument that assesses turbidity by measuring the scattering of light passing through a water sample containing such colloidal particles. Commercial turbidimeters cost hundreds or thousands of dollars, putting them beyond the reach of low-resource communities around the world. An affordable open-source turbidimeter based on a single light-to-frequency sensor was designed and constructed, and evaluated against a portable commercial turbidimeter. The final product, which builds on extensive published research, is intended to catalyze further developments in affordable water and sanitation monitoring.

【 授权许可】

CC BY   
© 2014 by the authors; licensee MDPI, Basel, Switzerland.