(Woods Hole Oceanographic Institution, 1986-10)
Clay, Peter R.; Longworth, Steven P.
This report reviews the working principles of the InterOcean S4
electromagnetic current meter and outlines the practical difficulties
and engineering solutions to convert these basic principles into a
working instrument.
Presented are the test procedures and results performed on three
production units placing emphasis on the oceanographic users point of
view. These tests, performed by the Ocean Structures and Moorings
Laboratory, Ocean Engineering Department, Woods Hole Oceanographic
Institution (WHOI), include laboratory, dockside, and both surface and
subsurface mooring tests. S4s are compared to each other and to other
types of current meters in various intercomparison tests.
Results of. this evaluation program are next summarized. Also,
suggestions for areas of improvement and further developments are made.
Finally, recommendations for the acceptance, calibration, and burning in
of new instruments conclude the report.
