The Singer Company

American Meter Company

Robert S Jacobsen

George W Schneider, Jr

Irwin A Hicks

Malcolm W Cornforth

David F Kee

A meter in a high pressure gas pipeline is calibrating using a sonic nozzle in series with the meter. A bypass line is run where measurements are made to determine gas composition dependent factors for use in defining the flow through the nozzle.

Method for determining the accuracy of a gas measurement instrument

An arrangement for determining the supercompressibility factor of a flowing gas at elevated pressure includes a first meter for measuring the volume flow rate of the gas at the elevated pressure, a restrictor at the outlet of the first meter for dropping the pressure of the gas to a pressure at which the supercompressibility factor is known, and a second meter for measuring the volume flow rate of the gas at the lower pressure. A computer calculates the supercompressibility factor of the gas at the elevated pressure by utilizing measured values of temperature, pressure and volume flow rate of the gas at both the elevated and lower pressures.

Apparatus for determining the supercompressibility factor of a flowing

An internal gate rotary vane fluid meter which has markedly improved performance as a result of precise control over the geometry and dimensions of the rotating elements and the fluid flow path. In particular, the outer diameter of the gate is the maximum possible which still allows the crescent to have an arc about the rotor axis which is sufficient to enclose the radial center lines of any adjacent pair of rotor vanes.

Internal gate rotary vane fluid meter with improved element geometry

A gas flow volume corrector mounted on a flow meter is provided with a microprocessor which calculates a corrected volume each time the meter measures a unit volume of flowing gas. Customer supplied data as to base conditions, specific gravity and gas composition are utilized to calculate supercompressibility values. These values are then processed to provide a plurality of constants which define calculation equations. The constants are stored in the corrector on a diode matrix card or PROM and are utilized each time the meter measures a unit volume of flowing gas for calculating the corrected volume. To conserve memory space, integer arithmetic, rather than floating point arithmetic, is utilized in the calculations.

Growing community of inventors

Hatboro, PA, United States of America

Robert S Jacobsen