Автор |
Martti Heinonen |
Дата выпуска |
1999-12-01 |
dc.description |
A new method for comparing dew-point generators was developed at the Centre for Metrology and Accreditation. In this method, the generators participating in a comparison are compared with a transportable saturator unit using a dew-point comparator. The method was tested by constructing a test apparatus and by comparing it with the MIKES primary dew-point generator several times in the dew-point temperature range from -40 to +75 °C. The expanded uncertainty (k = 2) of the apparatus was estimated to be between 0.05 and 0.07 °C and the difference between the comparator system and the generator is well within these limits. In particular, all of the results obtained in the range below 0 °C are within ±0.03 °C. It is concluded that a new type of a transfer standard with characteristics most suitable for dew-point comparisons can be developed on the basis of the principles presented in this paper. |
Формат |
application.pdf |
Издатель |
Institute of Physics Publishing |
Название |
A new comparison method for dew-point generators |
Тип |
paper |
DOI |
10.1088/0957-0233/10/12/319 |
Electronic ISSN |
1361-6501 |
Print ISSN |
0957-0233 |
Журнал |
Measurement Science and Technology |
Том |
10 |
Первая страница |
1261 |
Последняя страница |
1265 |
Аффилиация |
Martti Heinonen; Centre for Metrology and Accreditation, PO Box 239, FIN-00181 Helsinki, Finland |
Выпуск |
12 |