In 2001 the Centre for Metrology and Accreditation
(MIKES) started a project for expanding its absolute
pressure range downwards from 0,2 Pa, using two spinning
rotor type vacuum gauges (SRGs) as reference standards.
The Swedish National Testing and Research Institute (SP)
has since many years performed calibrations of low vacuum
gauges in the range from 0,0005 Pa to 5 Pa with SRGs.
Vaisala Oyj, a well-known Finnish manufacturer of
barometers, has a long experience of using SRGs for
measuring the reference vacuum of absolute pressure
balances in their measurement standards laboratory. The
contacts between the three laboratories are traditionally
close. Their cooperation consists of the exchange of
information, laboratory visits and joint comparisons. A
comparison of spinning rotor gauges in 2001-2002 was the
latest phase in the co-operation.
|Place of Publication||Helsinki|
|Publisher||Centre of Metrology and Accreditation (MIKES)|
|Number of pages||17|
|Publication status||Published - 2002|
|MoE publication type||D4 Published development or research report or study|