| Abstract: | Ever since the implementation of servo-control units (regular and minimodels) with manometers at U. S. Geological Survey streamflow stations, the need for an effective and efficient servo-control unit tester has been paramount among field personnel. In numerous cases, servo-control unit failures were blamed on battery failures and vice versa. There was no valid instrument to definitively identify cause of failure, let alone properly diagnose the servo-control/manometer system. In 1983, two servo-control unit testers were developed and fabricated. One was mechanical in fabrication, operation, and serviceability; the other was electronic. The testers were extensively used and evaluated in Maine, Ohio, Kansas, and Louisiana under a wide range of environmental conditions. The consensus to integrate the best aspects of both testers into one instrument allowed the Survey to finally solve its long-time need for an effective, efficient servo-control unit tester. (USGS) |
| Genre: | USGS Numbered Series |
| ProdID: | 15563 |
| Citation Author: | Rapp, W. L. |
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| Citation Language: | ENGLISH |
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| Citation Phsyical Description: | iii, 7 p. :ill. ;28 cm. |
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| Citation Publisher: | U.S. Geological Survey, |
| Citation Series: | Open-File Report |
| Citation Series Code: | OFR |
| Citation Series Number: | 85-690 |
| Citation Search Results Text: | Operating manual for the miniservo-control tester; 1986; OFR; 85-690; Rapp, W. L. |
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| Citation Year: | 1986 |
| Type: | citation/reference |
| Text: | Operating manual for the miniservo-control tester; 1986; OFR; 85-690; Rapp, W. L. |
| URL (THUMBNAIL): | http://pubs.usgs.gov/of/1985/0690/report-thumb.jpg |
| URL (DOCUMENT): | http://pubs.usgs.gov/of/1985/0690/report.pdf |
| Date Other: | Sat, 1 Jan 1994 00:00 -0600 |
| Publisher: | U.S. Geological Survey, |
