Station Measurement (Pressure Sensor); Point Velocity Measurement - Xylem SonTek FlowTracker2 User Manual

Variable
Mean X velocity component of all samples.
Vel. X Velocity is despiked and mounting correction
applied (if applicable).
Mean Y velocity component of all samples.
Vel. Y Velocity is despiked and mounting correction
applied (if applicable).
Mean Z velocity component of all samples.
Vel. Z Velocity is despiked and mounting correction
applied (if applicable).
σV. X
Standard error of X velocity component.
σV. Y
Standard error of Y velocity component.
σV. Z
Standard error of Z velocity component.
SNR. 1 Signal to noise ratio of Beam 1
SNR. 2 Signal to noise ratio of Beam 2
SNR. 3 Signal to noise ratio of Beam 3
Angle Flow angle relative to X direction
Bnd Boundary QC value
Mean wading rod angle during velocity
Tilt
measurement
Temp Mean temperature during measurement
GPS -
GPS derived Latitude
Latitude
GPS -
GPS derived Longitude
Longitude
9.3.3 Station Measurement
Station Measurement is performed at each Station based on measurement
requirements. The measurement locations can either be structured such in laboratory
environment where the position of the instrument is determined accurately or random
where velocities on channel banks are investigated. The station measurements consist
of collecting a number of different parameters and variables required by the General
mode.
9.3.3.1

Point Velocity Measurement

Point Velocity Measurement in General mode is not bound to any measurement
techniques and or guidelines as required in Discharge mode. The location of the station,
number of point velocity measurements and depth of point velocity measurements is
dependent on the user requirements.
If the velocity measurements are used to perform hydraulic analyzes of the flow
conditions in a channel, either a laboratory or natural channel, it is recommended that
ISO 748 – 2007 guidelines are used.
FlowTracker2 User's Manual (January 2019)
Description
(Pressure Sensor)
166
SonTek – a Xylem brand
Units Decimal
m/s or ft/s 4
m/s or ft/s 4
m/s or ft/s 4
m/s or ft/s 4
m/s or ft/s 4
m/s or ft/s 4
dB 3
dB 3
dB 3
Degree 2
n/a n/a
Degree 2
°C or °F 2
DDD° MM' SS.SS
DDD° MM' SS.SS