Due to the increasing need for traceable gas flow measurements in Finland, the development of a national measurement standard for gas mass flow was initiated at the Centre for Metrology and Accreditation (MIKES) in 2002. A primary calibration system based on dynamic weighing was constructed to provide traceability directly to the national mass and time standards. The MIKES gas flow measuring system includes also a commercial calibrator based on laminar flow elements. It is used as a working standard when calibrating mass flow meters for customers. The calibration range encompasses 0,4 mg/s to 625 mg/s. The relative standard uncertainty of the gravimetric system is between 0,2 % and 0,4 %.
|Publication status||Published - 1 Jan 2003|
|Event||11th IMEKO TC9 Conference on Flow Measurement, FLOMEKO 2003 - Groningen, Netherlands|
Duration: 12 May 2003 → 14 May 2003
Conference number: 11
|Conference||11th IMEKO TC9 Conference on Flow Measurement, FLOMEKO 2003|
|Abbreviated title||FLOMEKO 2003|
|Period||12/05/03 → 14/05/03|