A review on the design and development of turbidimeter

Abstract

Purpose – This paper aims to present a review of the design and development of the turbidimeter for measuring the turbidity level in water. Monitoring the turbidity level of water is important because it is related to public health. Design/methodology/approach – A precise and reliable turbidimeter can provide vital data that reveals the water condition level. Several turbidimeter units are discussed briefly. Three types of turbidimeter design – single beam, ratio and modulated four beams – are elaborated with some illustrations of the design concept. Various improvements and innovations for upgrading turbidimeter design are also discussed. Findings – This paper elaborated on a new method of estimating the water turbidity level in water samples using an optical tomography system based on the independent component analysis method. The results showed that a tomography-based turbidimeter can measure slight changes in the level of turbidity when the volume of contaminants is changed slightly. The turbidimeter can also provide a profile of the distribution of the turbidity in the water sample. Originality/value – A turbidimeter based on the optical tomography concept can be a valuable tool in determining the level of pollution in rivers, sea, etc.

Predicting suspended sediment concentration from nephelometric turbidity in organic‐rich waters

“…The tungsten light source produces a number of light wavelengths that improves detection of smaller sized particles but is susceptible to the effects of CDOM (Omar & MatJafri, ). The ISO 7027, however, uses a monochromatic light (e.g., a light‐emitting diode) that produces a narrow band of light and is less susceptible to inference from CDOM (Gipple, ; Khairi, Yunus, & Faramarzi, ; Omar & MatJafri, ; Sadar, ); however, the narrower light wavelengths of the ISO 7027 method are less sensitive to smaller particle sizes (Gipple, ; Omar & MatJafri, ).…”

Arduino Uno-based water turbidity meter using LDR and LED sensors

“…The ingredients that cause turbidity include sludge, well-defined organic materials, and other suspended particles. A nephelometer is a tool for measuring turbidity that gives results in units of Nephelometric Turbidity Unit (NTU) [35]- [37] it is the standard unit for measuring turbidity. In nephelometry and turbidimetry, light sources are projected through liquid samples stored in transparent sample containers.…”

Improving the structural schemes of optical dust measuring instruments

“…Оптичний метод є найефективнішим для безпе-рервного автоматичного контролю концентрації пилу як в атмосфері, так і у димових газах промислових підприємств без попереднього відбору [5][6][7]. Метод заснований на ослаблення світла за рахунок його погли-нання і розсіяння при проходженні через досліджуване пило-газове середовище.…”