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Title: Installation, Operation Amd Maintenance Of Automatic Chaet Changers
Author: Bruce J. Caldwell
Source: 1978 International School of Hydrocarbon Measurement
Year Published: 1978
Abstract: Automatic chart changers are intended to overcome the neccesity of routinely retrieving circular charts from recording locations at fixed time intervale, consistent with each 36O of chart rotation. Also, chart cbangers are a means of upgrading circular chart recorders to the attendance level of strip chart recorders, without sacrificing the obvious convenience of individual charts for specific segments of time, such as an hour, day, or week. Basically, chart changers consist of a chart plate that u Lores a supply of charts equal to recording requirements for a lengthly period of time, provisions for removing each topmost, chart of the pack once it is fully recorded, then a suitable receptical to stow recorded charts to await their retrieval.

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