Xylem SonTek FlowTracker2 - 3.4.4.1 Discharge Equation; 3.4.4.2 Discharge Uncertainty

SonTek – a Xylem brand
FlowTracker2 User’s Manual (January 2019)
50
Max Depth Change for Warning
0.01
200
50
%
Yes
Max Spacing Change for Warning
0.01
200
100
%
Yes
0.6 Method Depth
0
100
0.5
m or ft
Yes
Discharge Equation 3.4.4.1
The Discharge Equation parameter allows the user to specify what type of discharge
calculation method must be applied in the discharge calculation process.
a) The discharge equation calculation methods supported in FlowTracker2 software
is grouped under the following,
i). Mid-Section Method,
ii). Mean-Section Method,
iii). Japanese Method.
b) The default Discharge Equation applied in FlowTracker2 is Mid-Section.
The Arithmetic methods implemented for calculation of discharge 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.
• Japanese Literature
c) To change the Discharge Equation method,
i). Use the left or right arrow key to scroll through the list of options,
Discharge Uncertainty 3.4.4.2
The Discharge Uncertainty parameter allows the user to specify what type of
uncertainty analysis must be applied in the discharge calculation process.
a) The discharge uncertainty analysis supported in FlowTracker2 software is
grouped under the following,
i). ISO 748 - 2007
ii). Interpolated Variance Estimator (IVE)
b) The default Discharge Uncertainty method applied in FlowTracker2 is IVE.
c) The discharge uncertainty analysis was not implemented for the Japanese
discharge equation method.
The uncertainty analysis implemented for determining the overall discharge uncertainty
are based on the following literature,
• ISO 748 – 2007, Hydrometry - Measurement of liquid flow in open channels using