Weems and Plath Electronic Barometer - Manual (Page 12)

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ALARM FUNCTION
alr.
The Electronic Barometer allows you to set an alarm for air pressure variations – either
increasing or decreasing, which can be preset at 0.5 to 10 mb - for a given time - it can
be set for a period of 1 hour to 6 hours - or for a target air pressure value.
Setting the Alarm:
Press the alarm button; the next screen will appear in the dialogue zone. Choose the type
of alarm that you want: decrease, increase or targeted value.
Use the + - and
oK
buttons as above to move through the menu.
The + - buttons allow you to increase or decrease the value of the
pressure variation from 0.5 to 10 mb by 0.5 mb steps by 0.01 InHg steps from 0.01 InHg
to 0.30 and from 1 to 6 hours, hour by hour.
alr.
is displayed in the lower section of the upper screen of your Electronic Barometer.
The alarm for pressure variations is always based on real pressure
changes, even if the pressure displayed is the pressure that has been
reduced to sea level pressure. The alarm is less sensitive at altitude than
at sea level.
Turning off the Alarm:
Press the
alr.
button. The data previously recorded appears in the dialogue zone. The
navigational arrow flashes next to STOP? YES. Select yes.
alr.
The icon disappears from the upper screen.
The dialogue zone returns to the chart mode.
Modifying an Alarm:
To modify an alarm, you must deactivate the alarm and then set a
new one. Use the procedure for stopping the alarm described below,
then the procedure for setting the alarm to enter new data.
When the alarm goes off, a message will be displayed in the chart
zone showing the alarm settings (programmed air pressure change
or target value).
The buzzer goes off for 3 seconds then stops; the message remains
displayed. Pressing on any button will stop the alarm.
MEMORY FUNCTION
mem.
This function allows you to memorize and recall air pressure data at any time. For this
function, the time is always displayed.