Gas Meter and Associated Methods
First Claim
1. A gas meter comprising:
- a channel comprising a modifiable channel portion with an modifiable cross-sectional area, wherein the cross-sectional area of the channel portion is modifiable to control the velocity through the modifiable channel portion for a given flow rate; and
a thermal mass flow meter positioned within the modifiable channel and which measures the mass flow rate by heating a portion of the flowing fluid and then recording how that heat is dispersed by the flow.
2 Assignments
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Accused Products
Abstract
A device which: optically detects the presence of, measures the flow rate of, and identifies the characteristics of venting fugitive gas emissions. Specifically the device provides a spectral analysis of emission gas constituents; selective detection of the presence of venting hydrocarbons; measurement of venting emissions flow rates, the measurement of shut-in and flowing venting system pressures and the venting system temperatures. The flow rates are corrected, relative to the detection of the gas constituents and standard temperature and pressure (STP). These devices are configured to collect such data electronically and transmit via various telemetry systems, to a secure remote data network for reporting, access, evaluation, real-time monitoring and archiving as required.
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Citations
20 Claims
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1. A gas meter comprising:
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a channel comprising a modifiable channel portion with an modifiable cross-sectional area, wherein the cross-sectional area of the channel portion is modifiable to control the velocity through the modifiable channel portion for a given flow rate; and a thermal mass flow meter positioned within the modifiable channel and which measures the mass flow rate by heating a portion of the flowing fluid and then recording how that heat is dispersed by the flow. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for determining the flow rate of gas, the method comprising:
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flowing the gas through a channel, the gas channel having a portion with a modifiable cross-sectional area; measuring the mass flow rate through the modifiable portion by heating a portion of the flowing fluid and then recording how that heat is dispersed by the flow; adjusting the cross-sectional area of the modifiable portion based on the measured mass flow rate; and re-measuring the mass flow rate through the modifiable portion after the adjustment.
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11. A gas meter comprising:
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a flow meter configured to measure a flow of gas to provide a raw gas flow measurement; at least one gas property sensor configured to determine one or more properties of the gas and the environment; wherein the gas meter is configured to provide a compensated gas flow measurement by adjusting the raw gas flow measurement based on the determined one or more properties of the gas and the environment. - View Dependent Claims (12, 13, 14, 15)
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16. A method for determining the flow rate of gas, the method comprising:
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measuring a flow of gas to provide a raw gas flow measurement; determining one or more properties of the gas; providing a compensated gas flow measurement by adjusting the raw gas flow measurement based on the determined one or more properties of the gas.
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17. A gas meter comprising:
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a pressure module, the pressure module having a sealable pressure channel configured to enable fluid connection with a gas source and a pressure sensor configured to determine the pressure within the sealable pressure channel when sealed; and a flow module, the flow module having; a flow channel releasably connectable to pressure module to enable fluid communication between the gas source and the flow channel via the pressure module; and a flow sensor configured to determine the flow within the flow channel. - View Dependent Claims (18, 19)
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20. A pressure module for a gas meter, the pressure module comprising:
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a sealable pressure channel with source connector configured to enable fluid connection with a gas source; a pressure sensor configured to determine the pressure within the sealable pressure channel when sealed; and a module connector configured to enable connection with a further gas module.
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Specification