A Coriolis meter measures mass directly, without having to infer mass through the measurement of actual volume. The only required equation is to convert mass to equivalent volume: the gas density. The algorithm for the calculation is extremely straightforward. It is the application of the real gas law to a specific set of conditions. A configuration option exists to choose the density you wish to calculate between upstream, downsteam, observed or standard

Symbol | Description | Units |
---|---|---|

ρ | Real gas density | kg/m^{3} |

P | Pressure | kPaA |

T | Temperature | K |

Z | Compression factor at the entered pressure and temperature | - |

MW | Mole weight | kg/kmol |

Constant | Description | Value | Units |
---|---|---|---|

R | Universal Gas Constant | 8.314459848484848 | J/mol/K |

- American Gas Association Report No.11 - Measurement of Natural Gas by Coriolis Meter, 2003