Metering
The purpose of the flow metering system is to measure the gas flow for commercial purposes.
Sales gas metering package includes the dollowing:
- Flow Metering system
- Gas Chromatograph
- Miscellaneous component, like isolation valve, tube JB, etc.
One of the options is utilizing senior orifice meter. The flow meter is designed and constructed in accordance for AGA Report No 2. To compesate the flow readings, Pressure and Temperature transmitters are provided on each stream.
The capacity of each flow meter is based upon the plant throughput capacity, Three orifice plates are supplied for each stream to provide the maximum possible accuracy during turndowns in gas sales.
An Online gas chromatograph is installed to continually measure the sales gas composition. The componens to be measure are C1 through C6+, CO2, and N2. The gas chromatograph analyses the gas and transmits the composition data to the individual stream flow computer. The stream flow computer will compute the GHV of the gas being supplied.
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