Metrological research of a reference installation based on a high-pressure vessel

The urgency of development and metrological research reference installations based on high-pressure vessels, which meet the requirements implementation traceability instruments for measuring gas volume flow rate, is considered. operation algorithm specified when transferring unit to meters under consideration studied. Based features PVTt-type standards, a list analysed uncertainties type A formulated estimating calibrated vessel; absolute pressure temperature due influence instability meter presence gradient in vessel. Uncertainties B, are determined by characteristics instruments, as well uncertainty parameters evaluated means calculation, particular compressibility factor working environment, water vapour environment discreteness device collecting information about measurements from considered.
 Formulas quantify combined vessel, calculate air operating conditions installation given. These vessel at beginning end reproduction inlet meter. expressions calculating expanded standards