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Title: Field Communications For Ldc Pressure Monitoring
Author: Michael Marsters, Matthew Pawloski
Source: 2007 Appalachian Gas Measurement Short Course
Year Published: 2007
Abstract: It seems that the next logical step for our increasingly intelligent correctors, data loggers and flow computers would be to give them the ability to communicate. This would seem natural, with the growing number of personal computers in the gas industry and the tendency toward automatic data collection for large industrial and commercial customers. New challenges arise almost every day in the timely collection of billing data from interruptible service monitoring to the daily balancing of transportation gas. Already, many electronic correctors are being used to store load profile and other timerelated data in onboard memory. This can be downloaded into a handheld terminal, a portable computer or into a remote computer via telephone modem link. It is now not only desirable to get information out of the field instrumentation. New information can be fed into the corrector, as well. For example, we can now make our supercompressibilty even more dynamic. With twoway remote communication we can change our preset numbers for specific gravity, CO2 and N2 as we get new information from our gate stations via our growing SCADA networks. Also, high and low consumption or pressure limits are available in many of the electronic instruments available, allowing utilities to have instant notification of abnormal conditions in the field, instead of having to wait for customer complaint calls.

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