Operation of the Relay System A schematic diagram of the signal-system relay box is shown in figure S. The operation of the ... Power comes directly from battery (+) and goes to stage switch (COM), and to both switches (COM) of the DPDT relay. ... NO - normally open SPST - single-pole, single throw Checklist of Instructions and Field Form A checklist of the site-servicing instructions and the field form (fig.
|Title||:||Water quality of alluvial aquifers, Carroll and Guthrie counties, Iowa, with emphasis on the occurrence of nitrate and pesticides, 1986-87|
|Author||:||Mark G. Detroy, Carroll County (Iowa). Health Dept, Geological Survey (U.S.)|