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Page 352

| Figure 17-20 Two- and three-phase compared with single-phase meter applications. |

| wound spring-driven, causes a chart to travel. The indicating element of the meter has an inking device attached to it. As the chart travels, the inking device leaves upon it an ink track, thereby creating a continuous record of instantaneous values. The charts may be of the circular or strip type. Typical recording meters that use a circular chart are shown in Fig. 17-23. |

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