36
PRESSURE DIFFERENCE MEASUREMENT MODE
In the Barometric mode, PRESS the [Select] button once to enter this sub mode.
In the Pressure Difference Measurement mode:
Field 1 displays the change in temperature.
Field 2 displays the change in atmospheric pressure.
Field 3 displays the current time; to the left of the time is the text differ.
The Outer Circumference graphically displays the change in pressure where one full circle equals 100
mbars or 1 inHg.
This mode does continue in the background and allows the user to move to other modes and at the
users convenience can return to this sub mode to show the current reading.
How to Start the Pressure Difference Measurement
1. PRESS the [Select] button and hold for 2 seconds. Located in Field 1 is the text SET; located in Field
2, zero will begin to flash.
2. PRESS the [Mode] button to accept the flashing zero and start the difference measurement.
If the user does not desire to begin the difference measurement, PRESS either the [+] or the [-] button to
toggle to the current barometric pressure reading, then PRESS the [Mode] button to exit the setup
program.
Note: If the user does not press any button for 1 minute in the setup mode, the display will automatically
exit setup.
4-DAY MEMORY MODE
In the Barometric mode, PRESS the [Select] button twice to enter this sub mode. This feature allows the
user to follow changes in pressure that will assist forecasting changes in weather condition (i.e. storms).
In the 4-day memory mode:
Field 1 displays the day of the week the user is in;
Field 2 displays the atmospheric pressure; and
Field 3 displays the time and to the left the text memory.