Influence of Size of Source Effect on Accuracy of LWIR Radiation Thermometers
Determining the size of source effect of a radiation thermometer is not an easy task and manufacturers of these thermometers usually do not indicate the deviation to the measured temperature due to this effect. It is one of the main uncertainty components when measuring with a radiation thermometer...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Polish Academy of Sciences
2016-12-01
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| Series: | Metrology and Measurement Systems |
| Subjects: | |
| Online Access: | http://www.degruyter.com/view/j/mms.2016.23.issue-4/mms-2016-0050/mms-2016-0050.xml?format=INT |
| _version_ | 1811338550711418880 |
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| author | Cywiak David Cárdenas-García Daniel Rodriguez-Arteaga Hugo |
| author_facet | Cywiak David Cárdenas-García Daniel Rodriguez-Arteaga Hugo |
| author_sort | Cywiak David |
| collection | DOAJ |
| description | Determining the size of source effect of a radiation thermometer is not an easy task and manufacturers of these thermometers usually do not indicate the deviation to the measured temperature due to this effect. It is one of the main uncertainty components when measuring with a radiation thermometer and it may lead to erroneous estimation of the actual temperature of the measured target. We present an empiric model to estimate the magnitude of deviation of the measured temperature with a long-wavelength infrared radiation thermometer due to the size of source effect. The deviation is calculated as a function of the field of view of the thermometer and the diameter of the radiating source. For thermometers whose field of view size at 90% power is approximately equal to the diameter of the radiating source, it was found that this effect may lead to deviations of the measured temperature of up to 6% at 200ºC and up to 14% at 500ºC. Calculations of the temperature deviation with the proposed model are performed as a function of temperature and as a function of the first order component of electrical signal. |
| first_indexed | 2024-04-13T18:12:33Z |
| format | Article |
| id | doaj.art-dd94c74519324cfd8124d0c493cc44b3 |
| institution | Directory Open Access Journal |
| issn | 2300-1941 |
| language | English |
| last_indexed | 2024-04-13T18:12:33Z |
| publishDate | 2016-12-01 |
| publisher | Polish Academy of Sciences |
| record_format | Article |
| series | Metrology and Measurement Systems |
| spelling | doaj.art-dd94c74519324cfd8124d0c493cc44b32022-12-22T02:35:50ZengPolish Academy of SciencesMetrology and Measurement Systems2300-19412016-12-0123466166710.1515/mms-2016-0050mms-2016-0050Influence of Size of Source Effect on Accuracy of LWIR Radiation ThermometersCywiak David0Cárdenas-García Daniel1Rodriguez-Arteaga Hugo2Centro Nacional de Metrología, Km 4.5 Carretera a los Cues, 76246 Municipio el Marqués Qro, MexicoCentro Nacional de Metrología, Km 4.5 Carretera a los Cues, 76246 Municipio el Marqués Qro, MexicoCentro Nacional de Metrología, Km 4.5 Carretera a los Cues, 76246 Municipio el Marqués Qro, MexicoDetermining the size of source effect of a radiation thermometer is not an easy task and manufacturers of these thermometers usually do not indicate the deviation to the measured temperature due to this effect. It is one of the main uncertainty components when measuring with a radiation thermometer and it may lead to erroneous estimation of the actual temperature of the measured target. We present an empiric model to estimate the magnitude of deviation of the measured temperature with a long-wavelength infrared radiation thermometer due to the size of source effect. The deviation is calculated as a function of the field of view of the thermometer and the diameter of the radiating source. For thermometers whose field of view size at 90% power is approximately equal to the diameter of the radiating source, it was found that this effect may lead to deviations of the measured temperature of up to 6% at 200ºC and up to 14% at 500ºC. Calculations of the temperature deviation with the proposed model are performed as a function of temperature and as a function of the first order component of electrical signal.http://www.degruyter.com/view/j/mms.2016.23.issue-4/mms-2016-0050/mms-2016-0050.xml?format=INTsize of source effectradiation thermometertemperaturefield of view |
| spellingShingle | Cywiak David Cárdenas-García Daniel Rodriguez-Arteaga Hugo Influence of Size of Source Effect on Accuracy of LWIR Radiation Thermometers Metrology and Measurement Systems size of source effect radiation thermometer temperature field of view |
| title | Influence of Size of Source Effect on Accuracy of LWIR Radiation Thermometers |
| title_full | Influence of Size of Source Effect on Accuracy of LWIR Radiation Thermometers |
| title_fullStr | Influence of Size of Source Effect on Accuracy of LWIR Radiation Thermometers |
| title_full_unstemmed | Influence of Size of Source Effect on Accuracy of LWIR Radiation Thermometers |
| title_short | Influence of Size of Source Effect on Accuracy of LWIR Radiation Thermometers |
| title_sort | influence of size of source effect on accuracy of lwir radiation thermometers |
| topic | size of source effect radiation thermometer temperature field of view |
| url | http://www.degruyter.com/view/j/mms.2016.23.issue-4/mms-2016-0050/mms-2016-0050.xml?format=INT |
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