Xylem SonTek FlowTracker2 - Station Measurement (Pressure Sensor)

SonTek – a Xylem brand
FlowTracker2 User’s Manual (January 2019)
137
Variable
Description
Units
Decimal
measurement.
%Q
Station discharge as a percent of the,
• weighted rated discharge, of rated
discharge entries in supplement data or,
• measured discharge up to that station.
% 2
StnQ
Station or panel discharge, per discharge
method.
m
3
/s or ft
3
/s
4
TotalQ
Total discharge is the sum of all completed
station or panel discharges, per discharge
method.
m
3
/s or ft
3
/s
4
PanelVel
Panel velocity calculated based on discharge
calculation method.
m/s or ft/s
4
MeanStVel
Mean Station Velocity or Mean Velocity in
Vertical, X velocity component computed per
velocity method. Velocity is despiked and
mounting correction applied (if applicable).
m/s or ft/s 4
σV
Mean standard error of X velocity component
of all point measurements.
m/s or ft/s 4
SNR
Mean signal to noise ratio of beams 1, 2 of all
point measurements.
dB 3
Samples
Total number of samples received.
number
n/a
Spikes
Total number of spikes removed from mean
velocity.
number n/a
Angle
Mean flow angle relative to X direction.
Average the velocity angle from each point
measurement.
Degree 2
Tilt
Mean wading rod angle of all point velocity
measurements.
Degree 2
Temperature
Mean Temperature of all point measurements.
°C or °F
2
Bnd
Lowest Boundary QC value.
n/a
n/a
GPS -
Latitude
GPS derived Latitude DDD° MM' SS.SS
GPS -
Longitude
GPS derived Longitude DDD° MM' SS.SS
Station Measurement (Pressure Sensor) 8.3.4
Station Measurement is performed at each station that was created from the
subdivision of the measurements section into number of stations. The station
measurement consists of collecting a number of different parameters and variables
required for the Discharge Calculation Methods. Each station is unique with respect to
the selection of the location, width between adjacent stations, velocity method, averaging
interval used for velocity measurements and quality control parameters.