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Title: Orifice Recorder Testing
Author: Fred 0. Pitts
Source: 1983 Gulf Coast Measurement Short Course (Now called ASGMT)
Year Published: 1983
Abstract: The exchange of billions of dollars is based on the results of the orifice meter recorder test. The accuracy of these tests is based on three things the quality of the recorder, accuracy of the test equipment, and the ability of the technician. Most companies purchase good quality recorders that have been proven in the field over the years. Some of the things to look for in a recorder sire the type of material used in the recorder housing, the quality in the assembly of the linkage, access to the adjustments, the amount of difficulty required to make adjustments, and the ability to maintain accuracy. One other factor that might be considered is the geographic location in which the recorder will be used. For example, because of the expansion and contraction of mercury, a mercury type recorder may not be as well suited for locations where there are drastic temperature chajiges as would a bellows type recorder. On the other hand, in locations where the temperature does not change drastically, the mercury type recorder, which normally has very little linkage, may be more suitable because of its ability to maintain its accuracy over longer periods of time.

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