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T is the total time for the measurement,
t is the duration of time interval between gauge height readings,
h is the average gauge height readings taken between time interval.
The method for determining the weighted gauge height are based on the following
literature,
• Measurement and Computation of Stream flow: Volume 1. Measurement of Stage
and Discharge. Page 170. By S. E. RANTZ and others
5.2. General Mode
The General Mode of data collection is for applications that need a series of velocity
measurements at different locations that do not require a standard discharge output.
5.2.1
Measurement Technique
The basic Measurement Technique used for performing velocity measurements using
General Mode is briefly discussed below. The measurement technique differs from the
Discharge Mode where the objective is to determine water velocity at specific locations.
a) The measurement location is not required to comply with any measurement site or
hydraulic requirements stipulated in
b) The flow conditions at the measurement location should be within the
FlowTracker2 specifications.
c) Station is created for each point velocity measurement assigned a unique X and Y
coordinate.
d) Station velocity measurement performed at user defined location and depth.
5.2.2
Determining Mean Velocity
The Mean Velocity outputs generated from velocity measurements performed in
General Mode consist of Mean Station Velocity and Mean Velocity of All Stations.
a) The Mean Station Velocity is the average of the velocity measurements
performed over a user defined sampling interval at a specific measurement depth.
b) The Mean Velocity of All Stations is the average of all the station
measurements performed each at its own unique location and measurement
depth.
FlowTracker2 User's Manual (January 2019)
Site Selection
Requirements.
82
SonTek – a Xylem brand
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