General Tools and Instruments DA833 - Manual (Page 11)

GB
1 1
Notes On The Barometer Functions
Barometer readings may be affected by a change in altitude.
The unit cannot distinguish between a change in air pressure
caused by weather patterns or by a change in altitude. However,
accurate functioning of the unit can be maintained by following
a few simple steps.
To ensure that accurate barometric readings are maintained:
When the unit is stationed at the same elevation for extended
periods, it is advised to keep theunit in Barometer Mode.
In addition to maximizing the weather forecasting capabilities
the unit requires less power to function. Subsequently battery
life may be extended.
GENERAL OPERATION OF THE TIME
AND DATE FUNCTIONS
The DA833 has a Time and Date Mode. This mode also includes a
count-up timer and daily wakeup alarm.
The Time and Date Mode only affects the third line of the LCD.
To View Different Time and Date Mode displays:
1. Enter Normal Altimeter Display or Normal Barometer Display
to view current time.
( 2 hours per column )
An upward or downward direction of the vertical bars may illustrate
a changing pressure trend. Subsequently, this may indicate
changes in weather conditions. However, as stated previously,
caution needs to be taken when attempting to predict weather
forecasts.
Pressure History Display
Barometric pressure readings can also be displayed numerically.
To numerically display previous barometric pressure levels:
1. Enter the Barometric History Display
2. Press [+] or [-] to display the corresponding barometric
pressure for the specified time period.
About The Pressure Change Graph
The DA833 can display barometric pressure levels at intervals for
the past 12 hours. Each vertical bar on the Pressure Change Graph
represents a 2-hour time period. Each horizontal line represents
pressure change equal to + / - 2 mb/hPa.