Calibrating The Barometric Pressure; Setting Pressure Relative To Sea Level - Silva ADC Pro User Manual

13.5 Barometer Mode -
BARO
OFFSET
Pressure Calibration Display
[mode]
BARO
OFFSET
Calibration Setting Display
hold [reset] [reset]
Select the
setting by
forward scrolling
Select the setting by
forward scrolling
(fast scrolling)

Calibrating the Barometric Pressure

hPa
0.0
1001.3
hold [reset]
hPa
the offset
value
0.0
1001.3
the current
value
hold [set] [set]
Select the
setting by
backward scrolling
Select the setting by
backward scrolling
(fast scrolling)
To Calibrate the Barometric Pressure
!
Following the previous 'Setting the Storm Alarm'
section to select the Calibration Display.
!
In the Calibration Display, press and hold the
[reset] button for 2 seconds to select the
Calibration Setting Display.
!
When the 'offset value' digits are flashing, press
the [set] or [reset] button to scroll to select the
target offset value (hold down the button to scroll
the setting at a faster pace).
!
When the above settings finished, press the
[mode] button once to exit the setting sequence.

Setting Pressure relative to Sea Level

1) When the barometric pressure has been
calibrated, the current barometric pressure w i l l
offset by the target offset value.
2) To be able to read the current barometric
pressure as a pressure referring to sea-level
although at an altitude, calibrate as follows:
Check the current altitude (for example 1000m).
Divide 1000/8 (since 1 hPa/mbar is 8m altitude).
Result 125 hPa/mbar. Set offset to +125hPa/mbar.
The reading will now refer to the pressure at sea-
level.