Development of water turbidity sensor using laser diode/photodiode pair at wavelength of 905 nm

We have investigated the turbidity of water by directing a laser at wavelength of 905 nm into the water and measure its light reflectance using a photo detector. The experiment was done in a container with size of (35×24×45) cm3 using pure water, mixed of water with carbon and chalk powders, river a...

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Bibliographic Details
Main Authors: Mulyanto, Imam, Hanto, Dwi, Pratomo, Hari, Setiono, Andi, Bayuwati, Dwi, Widiyatmoko, Bambang
Format: Conference Proceeding
Language:English
Subjects:
Chalk
Containers
Drinking water
Microcontrollers
Photodiodes
Reflectance
Semiconductor lasers
Turbidity
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Summary:We have investigated the turbidity of water by directing a laser at wavelength of 905 nm into the water and measure its light reflectance using a photo detector. The experiment was done in a container with size of (35×24×45) cm3 using pure water, mixed of water with carbon and chalk powders, river and lake waters and a commercial drinking water as tested liquids. The 1.3 Watts laser diode was controlled by a microcontroller to emit light into the container every 5 seconds, from 100 cm height location and furthermore the liquid was poured into the container continuously while detecting laser light reflectance. The microcontroller read and processed the output data using C++ language.
ISSN:0094-243X
1551-7616
DOI:10.1063/5.0178394