On-line computers for custody transfer

摘要

The Flow computer has been around since the 1960's and is a microprocessor based device used to perform flow calculations at the measurement site and store the data in memory for later retrieval. The 1980's brought about inexpensive more reliable electronic equipment which made the flow computer more affordable. Even with the price coming down the real need for electronic measurement was brought about by the deregulation of the gas industry and Order 636, open access of the transmission pipelines. Today's flow computers are widely used throughout the gas industry and are rapidly becoming the standard for real-time measurment.