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Title: Electronic Flow Computers-Field Testing And Maintenance
Author: Nick J. Noecker
Source: 1975 International School of Hydrocarbon Measurement
Year Published: 1975
Abstract: The development of electronic flow computers over the past ten years has paralelled to a large extent the progress in solid state devices. Previous to 1965 nearly all solid state equipment was designed around the germanium transistor. Considerable skill was required by engineers to overcome the temperature limitations inherent to these devices. The appearance on the scene of silicon transistors relieved designers of a great deal of effort previously spent on temperature compensation and allowed development of computing circuits that were capable of .5% precision. These circuits could be built with low cost devices that didnt require special matching or temperature compensation. In 1970 the first internally compensated, low cost, integrated circuit operational amplifier became readily available. The IC op-amp represented a break through in analog flow computer design and made possible the marketing of these systems at prices lower than their discrete counterparts.

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