G
We have an Ultrasonic Flow Meter installed on a Natural Gas Line. This line divides into two branches and each branch has an orifice flow meter installed in it. The reading of ultrasonic flow meter is not coming equal to the sum of the readings of Orifice meters. I know that there is a difference of accuracy between Ultrasonic and Orifice but how close can we get? And what should be the strategy to match it to the best possible extent?
We do not have a live density value available here. Only Temperature and Pressure Transmitters are available.
In Ultrasonic Flow meter, predefined gas data are used for example:
1) Relative Density
2) Heating Value
3) % CO2
4) % N2
We can calculate the Compressibility Factor from here. Shall we use the same compressibility factor in the Orifice Meter equation to get the mass flow?
We do not have a live density value available here. Only Temperature and Pressure Transmitters are available.
In Ultrasonic Flow meter, predefined gas data are used for example:
1) Relative Density
2) Heating Value
3) % CO2
4) % N2
We can calculate the Compressibility Factor from here. Shall we use the same compressibility factor in the Orifice Meter equation to get the mass flow?