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RiverSurveyor How-to: The Loop Method, and BONUS offer on all new RS purchases through June 30!
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RiverSurveyor How-to: The Loop Method
In this short video illustration, you will learn the basics on how to conduct a Loop Method measurement, considered an industry standard and accepted by top water monitoring agencies worldwide.
The Loop Method is used to correct discharge measurements that are biased by sediment transport (moving-bed) when bottom-tracking is used as a reference to measure boat speed. The basic premise is based on a “back and forth crossing closure error” where the apparent upstream movement of the ship-track is used along with the measurement time to determine the mean velocity of a moving bed. In the case with a moving bed, the discharge will be biased LOW by a certain percentage based on the velocity magnitude of the moving-bed but can be corrected using the Loop measurement.
Another way to avoid moving bed bias is to use the Stationary Method, and the new RS 4.0 includes big improvements to RiverSurveyor Stationary Live software.
And to get you started, here's a SPECIAL OFFER!!: For a limited time, buy a new RiverSurveyor, and get a Stationary license for free (a BIG value!) Mention promo code SONLOOP to take advantage of this bonus deal! Offer expires June 30, 2017.
We are always happy to answer any questions regarding this event, the RiverSurveyor or other SonTek instrumentation. Contact us via email or call NZ: 0800 623 336 Aus: 1800 622 343