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Title: Witnessing Orifice Meter Calibration And Field Testing
Author: David Woods
Source: 1998 International School of Hydrocarbon Measurement
Year Published: 1998
Abstract: It would seem with the advent of electronic measurement and electronic custody transfer of natural gas and other petroleum products that witnessing orifice meter calibration and field-testing would become an obsolete practice in the petroleum industry. This however, is not the case. Due to low volume measurement, remote locations, dollar cost of electronic measurement, and arrangements between companies regarding electronic custody transfer, witnessing orifice meter calibration and field testing will continue to be an integral part of the petroleum industrys future. Even as technology moves forward and electronic measurement becomes common within the petroleum industry, electronic hardware used in measurement will, like the orifice recorder, only be a secondary measuring device. The meter tube and orifice plate will continue to be the primary measuring device. Due to these circumstances witnessing orifice meter calibration and field-testing will also continue to be important even though some emphasis will be shifted to witnessing field-testing of electronic equipment. The information in this paper is not meant to be an absolute but, to be used as a guide m witnessing and field testing orifice meters. There are many variables in testing that, due to the length of this paper will not be discussed.

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