Vector distance accuracy
Up to Velocimeters - single point
Hallo Nortek team,
I am working with a Vectrino in a Flume and have a question about the Distance Scan. I was trying to extract the information from existing forum threads but unfortunately did not succeed.
What is the accuracy of the distance scan measured with the Vectrino?
The manual says that the Vectrino is measuring with 10Hz at a sub mm accuracy, does that mean it measures with +/- 0.1mm?
What does the "quality" output of the distance scan mean??
Kind Regards,
Christian Schwarz
Hi Christian,
Distance accuracy is +/- 0.5 mm, half the measurement cell size. In practice, when I've checked this it's actually a bit better, around +/- 0.3-0.4 mm over smooth boundaries owing to the curve fit done on the data.
Sub mm only means less than a mm. 
Quality is a number indicating who valid the distance measurement is. Above 100 should be a good distance measurement. It's always good to have an independent estimate of position though, so we usually recommend using the probe check feature of the Vectrino software to get a ballpark number.
P.J.
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