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5.5.1
Calibration of anemometer sensor package
The ultrasonic sensor has been calibrated before leaving the factory. We do
not recommend that customers do calibration by themselves.
Customers use this feature only when the wind speed does not return to zero
when there is no wind
After the product works normally, use a cloth or sponge with good water
absorption (prevent the echo of the ultrasonic waves) to completely wrap the
air inlet.
With an open ended paperclip, press and hold the CAL button (item 7) for
three seconds, the top LED light (item 4) will be on. After releasing the
CAL button, place the product on the table. After five seconds, the top LED
light will flash. At this time it is in the calibration mode. After flashing for
around 6 seconds, the calibration will be over, and the product automatically
enters the normal working mode.
While in the calibration mode, you can use the calibration setting on the WS
View app(if paired with the GW1000 gateway) or the display console(if
paired with the HP2550/HP2551 console) to change the gain or offset.
5.5.2
Calibration of barometric pressure settings.
Calibration of barometric pressure requires some additional understanding,
which we will provide here. Also provided is a step by step procedure for
calibrating correctly.
Absolute barometric pressure can be calibrated at manufacturing time by
comparing with a precise instrument that measures pressure at the same
location. In practice, sometimes small adjustments of a few hPa may be
needed. The relative pressure represents what the air pressure would indicate
if your station was at sea level and depends on the altitude of your gateway
and cannot be known in advance. This is why it needs an adjustment.
Summary of Contents for GW1003
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Page 34: ...34 List display Weather Map ...