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Title: Theoretical Uncertainty Of Orifice Flow Measurement
Author: Emrys H. Jones, Jr.
Source: 1986 International School of Hydrocarbon Measurement
Year Published: 1986
Abstract: The uncertainty in a measurement is of interest to many parties associated with the measurement of fluids by orifice meters. Whether they are directly involved with the measurement or not the measujement uncertainty affects people in all capacities. For example, an energetic contract administrator may be tempted to specify that two meters agree within one half of one percent. Even though this specification may look good in a contract it is quite Impossible to get two orifice meters to always agree to within that tolerance. The design engineer must know the accuracy of the meter installed in a system so that readings from the meter may be used properly and so that a cost benefit comparison can be made. Measurement personnel are concerned with the amount of uncertainty involved in a measurement so that they will know if a meter is performing up to its maximum capability. All of these people are affected by the measurement uncertainty of the meter. They should be aware of metering uncertainty and how this uncertainty effects the flow measurement.

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