Related Experiment Video
Updated: Apr 18, 2026
Fiber Optic Distributed Sensors for High-resolution Temperature Field Mapping
Published on: November 7, 2016
Development of modulated optical transmission system to determinate the cloud and freezing points in biofuels
Liliana Jaramillo-Ochoa1, Cristian F Ramirez-Gutierrez2, Alonso Sánchez-Moguel3
1Departamento de Mecatrónica, Instituto Tecnológico Nacional, Sede Querétaro, Av. Tecnológico s/n, Col. Centro, Querétaro, Qro., Mexico.
Abstract:
This work is focused in the development of a modulated optical transmission system with temperature control to determine the thermal properties of biodiesels such as the cloud and freezing points. This system is able to determine these properties in real time without relying on the operator skills as indicated in the American Society for Testing Materials (ASTM) norms. Thanks to the modulation of the incident laser, the noise of the signal is reduced and two information channels are generated: amplitude and phase. Lasers with different wavelengths can be used in this system but the sample under study must have optical absorption at the wavelength of the laser.
More Related Videos
Related Concept Videos
03:12Freezing Point Depression and Boiling Point Elevation
The boiling point of a liquid is the temperature at which its vapor pressure is equal to ambient atmospheric pressure. Since the vapor pressure of a solution is lowered due to the presence of nonvolatile solutes, it stands to reason that the solution’s boiling point will subsequently be increased. Vapor pressure increases with temperature, and so a solution will require a higher temperature than will pure solvent to achieve any given vapor pressure, including one...
01:24Freezing Point Depression and Boiling Point Elevation