24
NOTE:
When low battery is detected, the channel number of the sensor detecting the low battery
condition will flash once every 4 seconds.
4.3.12 TREND INDICATOR
The trend indicator shows the temperature and
humidity trends of changes in the forthcoming
few minutes.
Rising
Steady
Falling
4.3.13 WIND
4.3.13.1 WIND SPEED AND DIRECTION SECTION OVERVIEW
1. High wind speed alert indicator
2. Gust indicator
3. Real time wind direction indicator (16 points)
4. Average / gust wind speed or Beaufort scale
1
4
3
2
4.3.13.2 WIND SPEED, GUST AND BEAUFORT SCALE DISPLAY
Press
[WIND]
key to switch display between Average wind speed, Gust, and Beaufort scale. The
wind level provides a quick reference on the wind condition and is indicated by a series of text
icons
Level
LIGHT
MODERATE
STRONG
STORM
Speed
2-8 mph
3-13 km/h
9-25 mph
14-41 km/h
26-54 mph
42-87 km/h
≥ 55 mph
≥ 88 km/h
NOTE:
-
Wind speed is defined as the average wind speed in the 12 second update period
-
Gust is defined as the peak wind speed in the 12 second update period
4.3.13.3 BEAUFORT SCALE TABLE
The Beaufort scale is an international scale of wind velocities ranging from 0 (calm) to 12
(Hurricane force).
Beaufort Scale
Description
Wind Speed
Land Condition
0
Calm
< 1 km/h
Calm. Smoke rises vertically.
< 1
mph
< 1
knots
< 0.3 m/s
1
Light air
1.1 ~ 5km/h
Smoke drift indicates wind direction.
Leaves and wind vanes are stationary.
1 ~ 3 mph
1 ~ 3 knots
0.3 ~ 1.5 m/s
2
Light breeze
6 ~ 11 km/h
Wind felt on exposed skin. Leaves rustle.
Wind vanes begin to move.
4 ~ 7 mph
4 ~ 6 knots
1.6 ~ 3.3 m/s
3
Gentle breeze
12 ~ 19 km/h
Leaves and small twigs constantly moving,
light flags extended.
8 ~ 12 mph
7 ~ 10 knots
3.4 ~ 5.4 m/s
