Suunto LUMI manual Getting incorrect readings, Absolute air pressure is measured constantly

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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.

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Contents User Guide Modes and Views Menu Content Symbols on the Display Page Page Index Welcome Introduction Changing Strap Length Page Tone guides General SettingsButton tones Backlight UnitsLanguage Activating button lock Introduction Using Time ModeSetting sunrise and sunset times Setting dateHandy tip Knowing the time at home Setting dual timeHandy tip Setting sunrise and sunset times Handy tip Measuring time Using stopwatchUsing day counter 24h5min Setting alarmHandy tip Waking up in the morning Matching profile to your activity Using Alti & Baro ModeHow Alti & Baro works Getting correct readings Altimeter + altitude moving + weather change Getting incorrect readingsAbsolute air pressure is measured constantly Altimeter + standing still + weather changeHandy tip Setting altitude reference value Setting reference value and profilesSetting altitude reference value Setting profiles Using weather trend indicatorSituation 3-6 hours ago Situation last 3 hours Handy tip Anticipating the weatherHandy tip Getting surprised by a storm while hiking Activating storm alarmUsing altimeter profile Using altitude difference measurer Handy tip Measuring your climbing Recording logsPage Handy tip Recording altitude Using barometer profileHandy tip Using the Barometer profile Using automatic profile Getting correct readings How compass worksPage Setting declination value Using compassPage Viewing logs Viewing and resetting log totalsPage Your Suunto Lumi operates on a 3-volt lithium cell, type CR Replacing BatteryPage Technical data SpecificationsPatent notice TrademarkCopyright 10.4 CEDisposal of device Page Index Altitude reference value Page Copyright Suunto Oy 6/2007, 9/2007. All rights reserved