Suunto Lumi [23/49] Getting incorrect readings

Absolute air pressure is measured constantly

Absolute air pressure + Reference altitude = Sea level air pressure (BAROMETER

profile)

Absolute air pressure + Reference altitude = Altitude (ALTIMETER profile)

Changes in local weather conditions will affect altitude readings. If local weather

changes often, it is advisable to frequently reset the local reference altitude

value, preferably before starting your journey and when an altitude reference

value is available. If local weather is stable, the local altitude reference value

can be set just once a day.

6.1.3 Getting incorrect readings

ALTIMETER + standing still + weather change

If you use the ALTIMETER profile for a longer period of time without any elevation

change and the weather changes, then your Suunto Lumi reads the weather

changes as altitude changes.

ALTIMETER + altitude moving + weather change

If the weather is frequently changing as you are either ascending or descending,

your Suunto Lumi will give incorrect readings.

BAROMETER + altitude moving

If you use the BAROMETER profile for a longer period of time as you are either

ascending or descending, your Suunto Lumi assumes you are standing still

and reads your altitude changes as weather changes.