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Title: Operation Of Orifice Meter Chart Integrators
Author: Philip C. Morris
Source: 1976 International School of Hydrocarbon Measurement
Year Published: 1976
Abstract: Since the inception of the Orifice Meter we have been seeking better ways to interpret the recordings made on meter charts. First we simply used the Sight Reading Method. This was accomplished by visually averaging the static and differential separately and multiplying the results together. We then advanced to the Planimeter Method basically it was an improved sight reading machine. We rotated the chart manually under a pen arm and the product of static and differential pressures were obtained separately. Sight reading and Planimeter methods were acceptable where the flow pattern was constant however they provided the square root of the average and not the average square root, which is the desired result.

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