Xylem SonTek FlowTracker2 - 8.3.3.2 Point Velocity Measurement

SonTek – a Xylem brand
FlowTracker2 User’s Manual (January 2019)
132
• The point velocity measurements are performed at a defined fractional depth
based on the velocity method selected.
Step 1
Station parameters defined for Velocity
Measurement, e.g., parameters of station 2m defined
for velocity measurements are the following,
a) Station location: 2m,
b) Water Depth: 1m,
c) Station Type: “Open Water”,
d) Velocity Method: Two Point.
e) To add open water station and continue to velocity
measurement,
i). Press the Right Soft Key.
f) To CANCEL a new station,
i). Press the Left Soft Key.
Figure 8:20 - Velocity
Measurement
Step 2
Measurement screen display the point velocity
measurements required at each fractional depth, e.g.,
the fractional depths for the two point method at
station 2m with a water depth of 1m are the following,
• 0.2 x water depth, 0.2m
• 0.8 x water depth, 0.8m
a) To select a fractional measurement depth,
i). Use the up or down arrow key to scroll through
the measurement options,
b) To continue to velocity measurement,
i). Press the enter key.
c) To open data collection menu,
i). Press the Right Soft Key.
d) To REVERT to add station screen,
i). Press the Left Soft Key.
Figure 8:21 - Measurements
The order in how the point velocity measurements are performed at each fractional
depth is not set and the user can perform the measurements in any order. The
software highlights the same fractional depth that was measured at the previous
station. This method reduces the number of key strokes and unnecessary adjustments
on the wading rod.
Station 1 2 3 4 5 6 7
0.2