Xylem SonTek FlowTracker2 - Section 4. Utilities; 4.1. System Clock

SonTek – a Xylem brand
FlowTracker2 User’s Manual (January 2019)
53
Displayed Velocity Methods screen includes the
following parameters,
a) 0.2/0.8/0.6 Methods
b) Kreps Methods
c) 5-Point Methods
d) 6-Point Methods
e) Vertical Velocity Curve
f) To select a velocity method,
i). Use up or down scroll arrows keys to select a
parameter,
ii). The parameter selected will be highlighted in
yellow.
g) To display a velocity method,
i). Use the left or right arrow key to select either
“Yes” or “No”
h) To navigate to Template Menu,
i). Press the Left Soft Key.
Figure 3:15 - Displayed Velocity
Methods
Discharge Velocity Methods specifies how the FlowTracker2 determines mean station
velocity at each station. See Determining Mean Station Velocity for details on the
Discharge Velocity Methods. Properties associated with the parameters in displayed
velocity methods are defined in Table 3:11,
Table 3-11 - Displayed Velocity Methods - Properties
Discharge Velocity Method
Default Display
Required
0.2/0.8/0.6 Methods
Yes
At least one
method is
required for
Discharge Mode
Kreps Methods
No
5-Point Methods
No
6-Point Methods
No
Vertical Velocity Curve
No
Methods implemented for determining mean velocity in a vertical are based on the
following literature,
• ISO 748 – 2007, Hydrometry - Measurement of liquid flow in open channels using
current meters or floats,
• WMO-No. 1044, Volume I – Fieldwork, 2010.