THE EFFECT OF VARIATIONS IN THE REFRACTIVE-INDEX OF INDUSTRIAL AIR UPON THE UNCERTAINTY OF PRECISION LENGTH MEASUREMENT

Authors
BIRCH KP REINBOTH F WARD RE WILKENING G
Citation
Kp. Birch et al., THE EFFECT OF VARIATIONS IN THE REFRACTIVE-INDEX OF INDUSTRIAL AIR UPON THE UNCERTAINTY OF PRECISION LENGTH MEASUREMENT, Metrologia, 30(1), 1993, pp. 7-14
Citations number
7
Categorie Soggetti
Physics, Applied","Instument & Instrumentation
Journal title
Metrologia → ACNP
ISSN journal
00261394
Volume
30
Issue
1
Year of publication
1993
Pages
7 - 14
Database
ISI
SICI code
0026-1394(1993)30:1<7:TEOVIT>2.0.ZU;2-M
Abstract
The extent and causes of air refractivity differences in industrial en vironments have been assessed at the level of less than 1 part in 10(7 ) by the PTB and the NPL using a refractometer instrumentation package capable of both direct measurement and calculation of the refractive index of the atmosphere using an interference refractometer and atmosp heric sensor measurements. The results of these measured and calculate d values are discussed, together with the comparison of a number of in dustrial air refractivity measurement sensors.