Source.VolumeFlowRate.Gas

Source

This process sources a reference volume flow rate of gas for calibrating gas-flow meters. The instantaneous volumetric flow rate q_V equals dV/dt, sometimes estimated as ∆V/∆t using the total volume ∆V flowing through a defined surface in time ∆t.

Result

Name	Quantity	m-layer aspect
VolumeFlowRate	—	—

Parameters

Parameter	Required	Quantity	m-layer aspect	Definition or allowed values
VolumeFlowRate	Required	flow-volume	volumetric-flow-rate (AS79)	Volume of substance passing through a specific cross-sectional area.
Temperature	Required	temperature	thermodynamic-temperature (AS101)	Temperature of the gas used during the measurement.
Pressure	Required	pressure:absolute	pressure (AS14)	Pressure of the gas used during the measurement.
RelativeHumidity	Required	relative-humidity	relative-humidity (AS110)	Relative humidity (water content) of the gas used during measurement, mostly applicable to ambient air as the medium.
Compressibility	Required	—	null (AS1)	Relative volume change as a result of a pressure change of the gas used.
ReferenceTemperature	Required	temperature	thermodynamic-temperature (AS101)	Reference temperature condition to or from which to correct the flow rate.
ReferencePressure	Required	pressure:absolute	pressure (AS14)	Reference pressure condition to or from which to correct the flow rate.
ReferenceRelativeHumidity	Required	relative-humidity	relative-humidity (AS110)	Reference Relative Humidity: condition to or from which to correct the flow rate
ReferenceCompressibility	Required	—	null (AS1)	Relative volume change as a result of a pressure change for the reference gas.
AmbientTemperature	Required	temperature	thermodynamic-temperature (AS101)	—
AmbientPressure	Required	pressure:absolute	pressure (AS14)	—
AmbientRelativeHumidity	Required	relative-humidity	relative-humidity (AS110)	—
OutletPressure	Required	pressure:absolute	pressure (AS14)	Outlet pressure ambient or otherwise.
ReynoldsNumber	Required	—	null (AS1)	Dimensionless quantity that characterizes the degree of laminar versus turbulent flow.
GasVelocity	Required	speed	speed (AS38)	Speed of the gas through the measurement area.
GasSpecies	Optional	—	—	Species of source gas for flow calibrations Identifiers for elements, compounds, mixtures for flow calibrations. Air · He · Ar · N2 · CO2 · CH4 · C3H8 · C4H10 · H2S · CO · H2 · Cl2
InnerDiameter	Required	length	length (AS3)	Inner diameter of the pipe used in the measurement.
DynamicViscosity	Required	dynamic-viscosity	dynamic-viscosity (AS107)	Fluid internal resistance to flow.

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