Water Vapour Effects in Mass Measurement

Water vapour density inside the mass comparator enclosure is a critical parameter whose fluctuations during mass weighing can lead to errors in the determination of an unknown mass. To monitor them, a method using DFB laser diode in the near infrared has been proposed and tested. Preliminary results...

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Bibliographic Details
Published in:Measurement science review 2008-01, Vol.8 (1), p.22-24
Main Author: Khélifa, N.
Format: Article
Language:English
Subjects:
air density
de-sorption
mass metrology
sorption
water vapour in air
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Summary:Water vapour density inside the mass comparator enclosure is a critical parameter whose fluctuations during mass weighing can lead to errors in the determination of an unknown mass. To monitor them, a method using DFB laser diode in the near infrared has been proposed and tested. Preliminary results of our observation of water vapour sorption and de-sorption processes from the walls and the mass standard are reported.
ISSN:1335-8871
1335-8871
DOI:10.2478/v10048-008-0006-y