Xylem SonTek FlowTracker2 User Manual page 212

Variable
Mean_VzErr
Mean_Temp
Quality_Control_Checks
Station_Spacing
Station_Order
Water_Depth
Boundary_Interference
Fractional_Depth
Low_SNR
Approaching_Low_SNR
Beam_SNRs_Not_Similar
Large_SNR_Variation
SNR_Threshold_Variation
Velocity_Standard_Error
Percent_Of_Spikes
Velocity_Angle
Rod_Angle
Station_Discharge
End_Edge_Location
Noise_Level
Peak_Location
Peak_Shape
Pre_Calculation_Validation
FlowTracker2 User's Manual (January 2019)
Mode
standard error.
Mean Vy Standard Error is the mean of the Y
G velocity standard error of all point velocity
measurements.
Mean Vz Standard Error of each station Z velocity
D
standard error.
Mean Vz Standard Error is the mean of the Z
G velocity standard error of all point velocity
measurements.
Mean Temperature is the mean of all the station
D
temperature measurements
Mean Temperature of all point temperature
G
measurements
D, G Quality_Control_Checks
Spacing between stations has changed by more
D
than Max Location Change %.
Station location out of sequence or outside river
D
edge.
Station depth differs from adjacent stations by
D, G
more than Max Depth Change %.
Evaluates the measurement environment for
D, G
interference from underwater obstacles
Verify ratio between measurement depth and
D
total depth and this should not >1
D, G Warning if SNR below 4dB
D, G Warning if SNR between 4dB and 7 dB
Difference in SNR for any 2 beams is > SNR
D, G
Threshold
One-second SNR data varies more than expected
D, G
during a measurement along a single beam.
SNR more than SNR Threshold different previous
D
measurements
σV (standard error of velocity) is a direct measure
D, G
of the accuracy of velocity data.
The percentage of spikes within a point velocity
D, G
measurement.
D, G The flow angle towards the ADV.
D, G The angle of the wading rod from the vertical
Station contains a large portion of the total
D
discharge.
Station location out of sequence or outside river
D
edge.
Shows the electronics noise level for the receiver
D, G
of each beam
D, G The physical location of the sampling volume
D, G The shape of the sampling volume
Consistency check on station data (e.g. edges,
D, G
island edges, etc.)
211
SonTek – a Xylem brand
Description