WS9153
VELLEMAN
6
5. Maximum and minimum temp / humidity memory
•
Press the MAX/MIN button once to display the highest recorded indoor and outdoor temperatures and indoor
humidity recorded since last reset. MAX is shown on the display.
•
Press MAX/MIN a second time to display the lowest recorded indoor and outdoor temperatures and indoor
humidity recorded since last reset. MIN is shown on the display.
•
After displaying the MAX and MIN recorded data for 3-4 seconds, the display will revert back to the current
readings and the MAX and MIN values will no longer be displayed.
•
The max/min data will clear and reset automatically each day.
•
To clear either the maximum or minimum data manually, when the recorded data is on the screen, press and hold
MAX/MIN for 3-4 seconds until the beep sounds.
6. Barometric pressure display and settings
a) Pressure display selection
Press
▼
to select either inHg (inches of mercury) or hPa (hectopascals).
b) Barometric pressure readings
The air pressure (850 hPa to 1050 hPa) can be displayed in absolute or relative hPa or inHg. The display setting in
hPa or inHg is true air pressure at the current time and location of the weather station and cannot be programmed.
c) Setting up altitude
•
The barometric pressure is influenced by your elevation relative to sea level. For accurate readings if you are not
located at or near sea level, you can set your weather centre to your actual altitude. The unit will then provide
pressure readings adjusted to sea level. The set range is -100 to 2500m (-330 to 8250 ft).
•
First contact your local weather bureau and find out the elevation at your location, then;
•
Press the PRESSURE button for 5-6 seconds until either 'meter' or 'feet' is flashing.
•
Press
▲
or
▼
to select either meter or feet.
•
Press PRESSURE and the altitude number will be flashing.
•
Press
▲
or
▼
to set the unit to the correct altitude.
•
Press PRESSURE to lock the setting.
•
For consistent readings and pressure history, your weather station should be kept at a constant altitude.
d) Pressure trend arrow
•
The pressure arrow on the LCD display indicates the barometric pressure trend.
•
A horizontal arrow indicates steady pressure.
•
An up arrow indicates rising pressure.
•
A down arrow indicates falling pressure.
e) Barometric pressure history
•
The bar graph shows the pressure history. The column to the right shows current pressure. Moving to the left,
the display shows prior time periods, beginning with -1 hour, then -2 hours, -3 hours, -6 hours and -12 hours.
•
Below the bar graph is the current numerical pressure reading in either inHg or hPa.
•
You can display the pressure on the numerical display for each hourly prior period by pressing the HISTORY
button on the back and it will scroll back from -1 hr to -12 hrs.
Summary of Contents for WS9153
Page 2: ...WS9153 VELLEMAN 2...
