Detection of Red Dye in Diesel Oil

B Varughese, H Khawaja

Abstract


Developing a sensitive and effective instrument for detecting the presence of red dye in diesel fuel is very advantageous for governments in preventing tax loss by controlling illegal use of the diesel fuel.

The objective of this work has been to investigate and develop an instrument to detect red dye in diesel, based on the principle of absorption. The peaks of absorption in red and pure diesel fuel were measured with the help of UV-spectrometer (Lambda 6/ PECSS). Optical interference filters of wavelengths 405 nm and 616 nm were used to modify the spectral transmittance of an optical system with appropriate spectral absorption characteristics. Two simultaneous light beams of two different colors were sent into the diesel fuel and the transmitted light from the fuel censored by a silicon photo detector. The signal from the detector was then amplified with the help of three operational amplifiers (OP-177) and sent to an analog device (AD 538) which can perform division operation.

The voltage produced when the violet light passes through the medium was divided when the red light passes through the medium in the one quadrant division unit (AD 538). The output voltage from the analog device was measured with the help of a digital multi-meter. The results show that the output voltages decreases with the increase in percentage of red dye in diesel fuel.


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References


Bentley, John P. Principles of Measurement systems, Second Edition

Hammer E. A and Audun Haugs, Quality Measurement of Salmon; Measurement System for Fat and Colour; December 1990, Bergen.

Kemp, William, Organic Spectroscopy, Heriot-Watt University, Edinburgh, 1978

C.Burgess and A.Knowles, Practical Absorption Spectrometery, London, 1984.

Perkin Elmar, User’s manual PECSS for lambda 6 UV/VIS spectrometer, June 1988.

Francis A.Jenkins and Harvey E.White, Fundamentals of Optics, Second Edition.

Leo Levi, Applied Optics, A guide to optical system design, Volume 2.

UDT Sensors, Inc, Opto Electronic componentscatalog.

Jacob Millman and Arvin Grabel, Micro Electronics, Second edition.

Norwoodmass, Real- Time Analog computational unit.

Rofin, company, Laser and Electro optics.

Ealing Electro-optics, Product Guide.

Geir Anton Johansen, Instrumentation for PC and DOS based programs, University of Bergen, Norway.




DOI: http://dx.doi.org/10.21152/1750-9548.11.2.223

Copyright (c) 2017 B Varughese, H Khawaja

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This work is licensed under a Creative Commons Attribution 4.0 International License.