TERMIUM Plus®
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THERMAL CONDUCTIVITY ANALYSER [1 record]
Record 1 - internal organization data 2001-05-17
Record 1, English
Record 1, Subject field(s)
- Chemistry
- Scientific Instruments
- Milling and Cereal Industries
Record 1, Main entry term, English
- thermal conductivity analyser
1, record 1, English, thermal%20conductivity%20analyser
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
Record 1, Textual support, English
Record number: 1, Textual support number: 1 CONT
In thermal conductivity analysers, a Wheatstone Bridge Circuit measures the imbalance caused by passing gas over detector filaments, using half of the cells for the fumigant air mixture and the other half for air as a control. This analyser, in a portable form, is commonly used to check for methyl bromide in ship holds, but it can also be calibrated for other gases. It will not differentiate between fumigants if mixtures are used. 1, record 1, English, - thermal%20conductivity%20analyser
Record 1, French
Record 1, Domaine(s)
- Chimie
- Instruments scientifiques
- Minoterie et céréales
Record 1, Main entry term, French
- analyseur de gaz à conductivité thermique
1, record 1, French, analyseur%20de%20gaz%20%C3%A0%20conductivit%C3%A9%20thermique
correct, masculine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
Record 1, Textual support, French
Record number: 1, Textual support number: 1 CONT
Dans ce genre d'appareil, on utilise un circuit à pont de Wheatstone pour mesurer le déséquilibre provoqué par le passage d'un gaz au-dessus des filaments détecteurs. La moitié des cellules sert à l'analyse du mélange fumigant/air; l'autre moitié sert aux mesures témoins avec de l'air uniquement. On utilise couramment des modèles portatifs pour mesurer les concentrations de bromure de méthyle dans les cales de navire, mais on peut aussi étalonner les analyseurs en fonction d'autres gaz. En pratique, les analyseurs à conductivité thermique conviennent mal pour l'analyse de mélanges de fumigants. 1, record 1, French, - analyseur%20de%20gaz%20%C3%A0%20conductivit%C3%A9%20thermique
Record 1, Spanish
Record 1, Textual support, Spanish
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