Model: 308-1451 www.lacrossetechnology.com/support
pg. 11
ABSOLUTE PRESSURE NUMBER
Absolute Pressure Number: Barometric Pressure is read by the forecast
station. Since this number is
absolute
pressure it may not be the same as a
local reporting station that reads in
relative
pressure.
Note: The number cannot be calibrated.
Unit of Measure: (InHg or hPa):
•
Hold the HISTORY button to switch from InHg (inches or mercury) or
hPa (Hecto Pascal).
PRESSURE HISTORY
1.
Press the HISTORY button to view numeric pressure history.
2.
0 is current pressure. -1 through -12 reflects the pressure history in
one-hour increments.
12 HOUR PRESSURE HISTORY GRAPH
•
The bar chart indicates the pressure trend over the last 12 hours.
•
The columns represent the pressure change readings at specific
times.
•
The “0” is equal to the current pressure and each bar represents how
past pressure was compared to the current pressure.
•
Read the graph from left to right. If the bars are rising, it means that
the weather is getting better due to the increase of air pressure.
•
If the bars go down, it means the air pressure has dropped and the
weather is expected to get worse from the present time.
Note: The bar graph will scroll
to prevent LCD burnout.
