PCWA-L 467.pdf - PCWA Middle Fork American River Project ...
PCWA-L 467.pdf - PCWA Middle Fork American River Project ...
PCWA-L 467.pdf - PCWA Middle Fork American River Project ...
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40 MEASUREMENT OF STAGE AND DISCHARGE<br />
scale of 10 in=5 ft (1:6) or 10 in=lO ft (1:12) is used with a time scale<br />
of 1.2, 2.4, or 4.8 in per day.<br />
Most graphic recorders can record an unlimited range in stage hy a<br />
stylus-reversing device or hy unlimited rotation of the drum.<br />
Most strip-chart recorders will operate for several months without<br />
servicing. Drum recorders require attention at weekly intervals. Figure<br />
19 shows a commonly used continuous strip-chart graphic recorder,<br />
and figure 20 a horizontal-drum recorder that must be serviced<br />
at weekly intervals. Attachments are available for the recorder<br />
FIGURE 19.-ContinuOU8 strip-chart recorder.
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