ECOWITT HP3501, Руководство по эксплуатации

Страница: 79 / 87

79
Problem Solution
Indoor and
Outdoor Humidity
do not agree
during indoor
testing
The procedure here is that same as for outdoor/indoor
temperature. The sensors should agree within 10 %
(the sensor accuracy is ± 5 %)
If these values still disagree, use calibration offsets
for one or both sensors (see section 5.3) to adjust to a
known good reference humidity.
Relative pressure
does not agree
with official
reporting station
Relative pressure refers to sea-level equivalent
temperature and should generally agree closely with
the official station. If there is a disagreement, make
sure you are not looking at absolute pressure, in
particular if your station is not near sea level. Also
check at different times due to occasional delays in
updates to the official station.
Redo the pressure calibration procedure described in
section 5.3.1.
The barometer is only accurate to ± 0.09 inHg (3 hPa)
within the following relative pressure range: 20.67 to
32.50 inHg (700 – 1,100 hPa), which corresponds to
an altitude of 9,000 ft. (2,750 m) down to 2,500 ft.
(750 m) below sea level. At higher altitudes, you
should expect a possible lesser accuracy and
non-linearity effects in the error (the calibration offset
only allows for a partially linear correction).
Time is incorrect Make sure your time zone and daylight savings time
setting is correct (even when connected to the
Internet via Wi-Fi this is needed). If not connected to
the Internet via Wi-Fi, you may also have to
manually set the correct time.
Display console
brightness is weak
Adjust brightness using setup functions, or place
console in a darker location.