SILVA ADC Summit - Manual (Page 42)

To Calibrate the Barometric Pressure
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.
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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.
1) When the barometric pressure has been
calibrated, the current barometric pressure w i l l
offset by the target offset value.
Setting Pressure relative to Sea Level
Barometer Mode - Calibrating the Barometric Pressure 13.5
Calibration Setting Display
Pressure Calibration Display
hold [reset]
[set] hold [set]
[mode]
[reset] hold [reset]
Select the
setting by
backward scrolling
Select the
setting by
forward scrolling
Select the setting by
backward scrolling
(fast scrolling)
Select the setting by
forward scrolling
(fast scrolling)
1001.3
0.0
OFFSET
BARO hPa
1001.3
0.0
OFFSET
BARO hPa
the offset
value
the current
value