SonTek RS5 User Manual (August 2020) 84
Figure 62. Options for Beginning Data Collection
7.10.1 Add Loop (Optional)
The Loop moving bed test is commonly used to identify a moving bed and correct for its
effects in the final discharge. The Loop Method is documented in Mueller and Wagner
(2006), and the procedure described here follows this document step-by-step. The loop
methods consists of an out-and-back transect loop across the section that should start
and end at the same position.
1. Make sure a successful compass calibration has been performed, described in
Section 7.5.4. A compass calibration is
required
for a Loop test.
2. Establish a starting point near the bank. It will be helpful to select this location
such that the boat can easily be controlled when starting and ending a
measurement. The starting point does not need to be located as close to the
bank as a regular discharge measurement. To guarantee a common start and
end position, users can mark the location on their cable, tape, or anything else
being used to assist.
3. To start a Loop, click the Add Loop button. The Loop Preview dialog will appear,
as shown in Figure 63. At any point beyond this, pressing the Cancel Loop button
will cancel the Loop measurement.
Summary of Contents for Sontek River Surveyor RS5
Page 1: ...RS5 USER MANUAL XA00125...
