National Geographic Colour Weather Center 5in1, Инструкция по эксплуатации

Страница: 46 / 52

46 / 52
The perceived temperature is based on the common effects of temperature and humidity. Heat index
is only calculated when room temperature is at 27° (80° F) or higher. The displayed perceived temper-
ature is calculated solely from temperature and humidity and is measured by the outdoor sensor.
36 Dew point
Press the INDEX button several times until DEW POINT is displayed.
Note:
The dew point is the temperature below which the water vapor in air at constant barometric pressure
condenses into liquid water at the same rate at which it evaporates. The condensed water is called
dew when it forms on a solid surface. The dewpoint temperature is calculated from the indoor temper-
ature and humidity measured at the main unit.
37 History record for the past 24 hours
The base station automatically records and displays data of the past 24 hours.
1. Press the HISTORY button to check history records of the last hour.
2. Press the HISTORY button several times to display the history records of the hours 2,3,4,5 ......
38 MAX/MIN Weather data
The base station preserves the MAX/MIN weather data records until the next manual reset. To retrieve
the data:
1. Press MAX/MIN button several times to display the stored values one after another.
2. Display order: Outdoor max temperature > Outdoor min temperature > Outdoor max humidity >
Outdoor min humidity > Indoor max temperature > Indoor min temperature > Indoor max humidity
> Indoor min humidity > Outdoor max wind chill > Outdoor min wind chill > Outdoor max heat index
> Outdoor min heat index > max dew point > min dew point > max pressure > min pressure > max
average > max gust > max rainfall
3. Press MAX/MIN button for approx. 2 seconds to delete all saved values.
39 Display brightness regulation
• Move the [HI/LO/AUTO] switch to change the brightness of the display. The brightness is automat-
ically adjusted to the next level. Brightness level order: brighter backlight [HI] > dimmer back-
light [LO] > automatic [AUTO]
• [AUTO] automatically adjusts the brightness according to the environment.
40 Technical data
Base unit
Power supply 5V DC 600mA USB power plug
Backup: 1x CR2032
Temperature unit °C/°F
Time display HH:MM:SS / weekday
Time format 12 or 24 hours
Calendar display DD/MM
Time signal DCF
DAYLIGHT SAVING TIME (DST) AUTO / OFF
Dimensions 118 x 192.5 x 21 mm (W x H x D)
Weight (incl. batteries) 260 g