Light Emission Diode Water Thermometer: A Low-Cost and Noninvasive Strategy for Monitoring Temperature in Aqueous Solutions
A spectroscopic device for monitoring the temperature of aqueous solutions is presented. It uses a 950 nm light emission diode as light source and two photodiodes as detectors. Temperature is monitored following the thermally induced absorbance changes of the water-OH second overtone (∼960 nm). A li...
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2004
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00037028_v58_n3_p344_Thompson http://hdl.handle.net/20.500.12110/paper_00037028_v58_n3_p344_Thompson |
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paper:paper_00037028_v58_n3_p344_Thompson2023-06-08T14:24:45Z Light Emission Diode Water Thermometer: A Low-Cost and Noninvasive Strategy for Monitoring Temperature in Aqueous Solutions NIR water absorption Noninvasive temperature measurement Spectroscopic temperature monitoring Absorption Bandwidth Cost effectiveness Light emitting diodes Photodiodes Solutions Spectroscopic analysis Temperature measurement Thermal expansion Water NIR water absorption Noninvasive temperature measurement Spectroscopic temperature monitoring Thermometers A spectroscopic device for monitoring the temperature of aqueous solutions is presented. It uses a 950 nm light emission diode as light source and two photodiodes as detectors. Temperature is monitored following the thermally induced absorbance changes of the water-OH second overtone (∼960 nm). A linear response between the light absorbed by an aqueous solution and its temperature is found in the range from 15 to 95 °C. A prediction error of 0.1 °C and a precision of 0.07 °C in temperature measurement can be achieved. Up to 0.1 M of electrolyte concentration can be present in the solution without significantly affecting the temperature measurement. Different strategies, such as remote (noninvasive) or in situ (using a fiber-optic probe) temperature measurement, are shown, and their relative advantages are discussed. 2004 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00037028_v58_n3_p344_Thompson http://hdl.handle.net/20.500.12110/paper_00037028_v58_n3_p344_Thompson |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
NIR water absorption Noninvasive temperature measurement Spectroscopic temperature monitoring Absorption Bandwidth Cost effectiveness Light emitting diodes Photodiodes Solutions Spectroscopic analysis Temperature measurement Thermal expansion Water NIR water absorption Noninvasive temperature measurement Spectroscopic temperature monitoring Thermometers |
| spellingShingle |
NIR water absorption Noninvasive temperature measurement Spectroscopic temperature monitoring Absorption Bandwidth Cost effectiveness Light emitting diodes Photodiodes Solutions Spectroscopic analysis Temperature measurement Thermal expansion Water NIR water absorption Noninvasive temperature measurement Spectroscopic temperature monitoring Thermometers Light Emission Diode Water Thermometer: A Low-Cost and Noninvasive Strategy for Monitoring Temperature in Aqueous Solutions |
| topic_facet |
NIR water absorption Noninvasive temperature measurement Spectroscopic temperature monitoring Absorption Bandwidth Cost effectiveness Light emitting diodes Photodiodes Solutions Spectroscopic analysis Temperature measurement Thermal expansion Water NIR water absorption Noninvasive temperature measurement Spectroscopic temperature monitoring Thermometers |
| description |
A spectroscopic device for monitoring the temperature of aqueous solutions is presented. It uses a 950 nm light emission diode as light source and two photodiodes as detectors. Temperature is monitored following the thermally induced absorbance changes of the water-OH second overtone (∼960 nm). A linear response between the light absorbed by an aqueous solution and its temperature is found in the range from 15 to 95 °C. A prediction error of 0.1 °C and a precision of 0.07 °C in temperature measurement can be achieved. Up to 0.1 M of electrolyte concentration can be present in the solution without significantly affecting the temperature measurement. Different strategies, such as remote (noninvasive) or in situ (using a fiber-optic probe) temperature measurement, are shown, and their relative advantages are discussed. |
| title |
Light Emission Diode Water Thermometer: A Low-Cost and Noninvasive Strategy for Monitoring Temperature in Aqueous Solutions |
| title_short |
Light Emission Diode Water Thermometer: A Low-Cost and Noninvasive Strategy for Monitoring Temperature in Aqueous Solutions |
| title_full |
Light Emission Diode Water Thermometer: A Low-Cost and Noninvasive Strategy for Monitoring Temperature in Aqueous Solutions |
| title_fullStr |
Light Emission Diode Water Thermometer: A Low-Cost and Noninvasive Strategy for Monitoring Temperature in Aqueous Solutions |
| title_full_unstemmed |
Light Emission Diode Water Thermometer: A Low-Cost and Noninvasive Strategy for Monitoring Temperature in Aqueous Solutions |
| title_sort |
light emission diode water thermometer: a low-cost and noninvasive strategy for monitoring temperature in aqueous solutions |
| publishDate |
2004 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00037028_v58_n3_p344_Thompson http://hdl.handle.net/20.500.12110/paper_00037028_v58_n3_p344_Thompson |
| _version_ |
1768544801087553536 |