Xylem SonTek River Surveyor S5 User Manual

SonTek, a Xylem brand
RiverSurveyor S5/M9 System Manual (February 2013)
143
• Velocity
o In the Statistical calculation, this term includes both uncertainty in the velocity
measurement and the effect of changes in velocity between stations.
o In the ISO calculation, this term includes only the uncertainty in velocity meas-
urements.
• Width: estimated uncertainty in width measurements.
• Method: estimated uncertainty from not measuring velocity throughout the entire water col-
umn (velocity near the surface and bottom must be estimated).
o Used for the ISO calculation only.
• Number of stations: estimated uncertainty from measuring velocity and depth at a limited
number of locations across the river.
o Used for the ISO calculation only.
The Discharge Measurement Report shows both uncertainty calculations and the contribution of
each parameter to the overall uncertainty.

Xylem SonTek River Surveyor S5 Specifications

General

Brand	Xylem
Model	SonTek River Surveyor S5
Category	Measuring Instruments
Language	English