ECOWITT HP2551, Руководство по эксплуатации

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5.3.2 Install wind vane
Push the wind vane onto the shaft on the top side of the sensor package,
until it goes no further, tighten the set screw, with a Philips screwdriver (size
PH0). Make sure the wind vane can rotate freely. The wind vane’s
movement has a small amount of friction, which is helpful in providing
steady wind direction measurements.
Figure 5: Wind vane installation diagram
The wind direction section on the main unit display shows the letters N
(North), E (East), S (South) and W (West). The integrated wireless sensor
must be oriented so that the arrow marked “North” on the top of the wireless
sensor is pointing north. If the integrated wireless sensor is oriented
incorrectly, wind direction measurement will be inaccurate.
5.3.3 Install wind speed cups
Push the wind speed cup assembly onto the shaft on the top side of the
sensor package, Tighten the set screw, with a Philips screwdriver (size PH0).
Make sure the cup assembly can rotate freely. There should be no noticeable
friction when it is turning.