Article provided by: Gas Analytical Services



The accurate measurement of the gas flow in pipelines plays a significant role in the transmission of fuel gases such as propane and natural gas. Fuel gases are usually sold in a volumetric measure, with this making it a necessity to ensure the accurate measurement of gas flow sold to customers to ensure they are charged appropriately for the gas delivered to them. Also, the precise measurement of gas flow is essential for optimal operational control in processing facilities and gas production. 

Traditionally, gas flow measurement and recording were usually performed with an orifice meter and a circular chart recorder, installed in gas pipelines. The flow pressure in the pipeline increases due to the orifice's mode of installation and the chart recorder captures the flow readings in the process. However, lots of drawbacks are associated with the use of orifice meters and circular chart recorders. The measurement accuracy is solely dependent on the selection of orifice plates with different sizes which varies concerning the gas flow rate.

Therefore, the orifice plate is regularly changed to suit variations in gas flow rates. And the process requires additional labour cost likewise the need for frequent gathering and replacement of the circular charts. Added to these inconveniences are the needs for maintenance and repair of ink pens, frequent adjustment, and the need for an expert to interpret the charts before obtaining a reliable, accurate gas flow measurement. 

All of these drawbacks could be overcome by the use of our Electronic gas flow measurement and recording device in place of a circular chart recorder. The use of an electronic gas flow measurement is always combined with flow meters to get an accurate result.


How Electronic Gas Flow Measurement Works (EFM)

Our EFMs possesses a microprocessor and ROM that does the gas flow rates calculations following the AGA-3 and AGA-8, which are incorporated into the EFM's memory.

Located in the ROM of the EMF are the look-up tables containing intermediate values responsible for smart data analysis of inputted variables such as gas temperature, density, and pressure. Accord to the input received from gas and temperature sensors; the corresponding intermediate value is selected in the EMF, and then uses these values to calculate the actual gas flow rates with the help of the software inside the EMF.

The EMF then produces a digital read-out of instantaneous and historical gas flow rate, which helps gas companies end their struggles over a lost and unaccounted for gas program. More so, it can archive flow records from a period of several weeks, and this information could be largely gathered in a more convenient way than you could ever do using a chart recorder.

Besides, flow rate calculations could be easily transferred to a remote collection point location via the cloud, eradicating the stress of a regular visit to the pipeline by field technicians. Also, the flow recorded data can be compiled and stored on a portable data storage medium such as memory card, floppy disk, or a compact disk.

Contact us to speak with a representative or to learn more about our software solutions, field services, laboratory and analysis, and equipment and supplies.

Gas Analytical Services
415 West Barbours Cut
La Porte TX TX 77571

View Larger Map

We welcome your comments!