Below are photos of a colleague's WS80 installation. cleaned he had the transducers after 2 years and uploaded fresh software from Ecowitt with 1.2.8. Another colleague from Poland reports to me Ecowitt ultrasound undershooting. These comparison results from this setup can be followed below.
It could be that the measurement results between WS80 units differ on the same software version, which could be due to poor repeatability and stability of the hardware.
Ecowitt WS68:
https://www.ecowitt.net/home/index?id=185056#Ecowitt WS80:
https://www.ecowitt.net/home/index?id=72964From our observations, it seems that the Ecowitt ultrasonic wind gauges are far from acceptable accuracy and stability even in dry conditions, and subsequent updates as we can see do not bring a breakthrough in accuracy. We consider it a waste of time.
In order to confirm this problem further and to determine whether the WS68 or WS80 on the 1.2.8 software is closer to the truth and the correct speed range, we plan to make a long-term comparison with WMO-compliant reference instruments that perform wind direction and speed measurements using the same measurement technology as the WS80. There is no other way and eyewitness observations will not dispel this for us.
https://gillinstruments.com/compare-2-axis-anemometers/windsonic-2axis/https://tiny.pl/crj2mIn fact, it refers to the WS90 Wittboy, because the hardware layer is the same as in the WS80 and analogous 40Khz converters are used in both, hence most likely there will be no difference in accuracy between the two measuring instruments.
We Poles are interested in accurate measurements or strongly close to reality. Hence, we check Ecowitt equipment in depth, but not only, as we also check semi-professional and professional companies.