ACCOUNTING FOR MASS AND ENERGY FLOWS IN THE LIQUID AND GASEOUS STATESBY MEANS OF DIFFERENTIAL-PRESSURE FLOWMETERS WITH CONSTRICTORS

To improve the system used by the Russian Federation to measure the ra te of flow of liquids and gases, research has been undertaken as part of a program entitled ''System for the Automated Design of Differentia l-Pressure Flowmeters with Constrictors (DPF ADS). Computing-Search Su bsystem SKhl.'' The program is based on study of the energy-conservati on and flow-metering methods employed by certain leading companies (in particular, Pacific Gas and Electric Company (San Francisco, U.S.), I SO standards (ISO 5167-1:1991 (E), ISO 5168-1978 (E)), and standards p resently in effect in Russia (RD 50-213-80 and RD 50-411-83). The most important results of this research are being published in a series of related articles (see Measurement Techniques Nos. I and 5 for 1994 an d Nos. 1, 2, and 3 for 1995).