SonTek, a Xylem brand
132 RiverSurveyor S5/M9 System Manual (February 2013)
Follow the simple procedure outlined in the Get Tagline Azimuth dialog as follows:
1. Align the M9/S5 power and communications connector to point directly down-
stream. If you are deploying the instrument from a floating platform (i.e. boat,
tri-hull, hydroboard, etc…) then simply lower the boat into the water and allow
it to align itself with the flow. This is typically best done in a location near the
center of the river in a section of flow that flowing directly downstream.
2. Once the M9/S5 has been correctly aligned with the river and is relatively
steady press Start to collect data. During this time the compass will display
instrument heading at 1-second intervals, average instrument heading, com-
puted tagline azimuth, and the number of samples (in seconds) as shown in
Figure 117. After 20-30 seconds of data collection press Stop and close the
dialog. The tagline azimuth field in the system settings dialog box will auto-
matically be updated with the tagline azimuth measured using Get Tagline Az-
imuth.
Figure 117. Get Tagline Azimuth
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