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Title: Flow Computing And Telemetering Systems
Author: R. Hardcastle
Source: 1964 Southwestern Gas Measurement Short Course (Now called ISHM)
Year Published: 1964
Abstract: Analog computing and telemetering systems are not new to the Natural Gas Industry. They performed continuous online measurement and transmission long before the new digital systems were available. Digital computing systems have so far been limited to off-line operations. As far as telemetering is concerned, the digital method does not provide the continuous operating record for which analog telemetering is so well known. Since both pneumatic and electronic analog computing systems arc available, it is up to the instrument engineer to decide which is better suited to the application under consideration. Essentially, the analog computer may be described as an instrument or group of instruments which continuously performs a mathematical calculation on one or more variables. Both pneumatic and electronic systems have their singular purpose but each has its own advantages.

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