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Title: Design Of Telemetering Systems
Author: Al Woods
Source: 1976 Appalachian Gas Measurement Short Course
Year Published: 1976
Abstract: Perhaps the first use of electronic supervisory was to sense and control a condition at a remote location from a central point. Stringing some wires between the two locations and connecting them provided the necessary communications link, and a new field of specialty was born. Following that first conncetion, it became apparent that additional points would need to be controlled and measured. This required additional wire pairs to be strun, and in a short period of time, it was beginning to take on monsterous form. There were wires everywhere, and wires got longer, and consequently, more expensive. Maintenance was also a problem the more wire, the greater the probability of faults. Lightening was a serious problem, therefore, adequate protection was required for both ends of each pair. As systems grew larger and larger, there was a need for greater precision and higher security.

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