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    Doubt about Suunto 9 Baro altimeter/barometer calibration

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    • freeheelerF Offline
      freeheeler @mario_b
      last edited by

      @mario_b
      my experience with Suunto customer service is one of the best I’ve ever experienced!
      My wife had problems with her A3R from start (battery capacity calculation etc) and it was fixed within a week 👌

      Ok, I did not expect huge problems with your watch, good to know 🙂

      I did not play around on the baro settings, I actually only use the alti mode and really never look at the baro itself.
      But it was a very good hint from you regarding the fused alti and when it kicked in. Next time I will know, thank you!

      living sideways

      mario_bM 1 Reply Last reply Reply Quote 1
      • mario_bM Offline
        mario_b @johann.fuehrer
        last edited by

        @johann-fuehrer just to be sure:

        • you know the exact elevation you are when reading your watch pressure? and the altimeter is set correctly?
        • you did the fridge test which @Dimitrios-Kanellopoulos mentioned above?
        • you are not inside a building?
        J 1 Reply Last reply Reply Quote 0
        • mario_bM Offline
          mario_b @freeheeler
          last edited by

          @TELE-HO yes suunto service is fantastic.
          no it really didn’t.

          on small hikes i do not record it, but wanna know the nearly correct elevation. and a guy from search and rescue (with an a3p) told me: if you look at the nearest weatherstations ambient pressure and compare that with your watch, you know about +/-10-15 meters if your elevation is correct, without the need of activating gps. and that works very well. 👍

          1 Reply Last reply Reply Quote 1
          • J Offline
            johann.fuehrer Bronze Member @mario_b
            last edited by

            @mario_b said in Doubt about Suunto 9 Baro altimeter/barometer calibration:

            @johann-fuehrer just to be sure:

            • you know the exact elevation you are when reading your watch pressure? and the altimeter is set correctly?

            Definitely!

            • you did the fridge test which @Dimitrios-Kanellopoulos mentioned above?

            Yes, coming back to exact the same altitude. In my opinion it was very quick, some 5 minutes. But I’ll do it again if you like.

            • you are not inside a building?

            No.
            I did check this also inside the office (open windows), so ambient pressure inside and outside should be equal, no aircondition and the behaviour is the same like outside.

            mario_bM J 2 Replies Last reply Reply Quote 0
            • mario_bM Offline
              mario_b @johann.fuehrer
              last edited by

              @johann-fuehrer so maybee it should be recalibrated. i would ask the support.

              1 Reply Last reply Reply Quote 0
              • J Offline
                johann.fuehrer Bronze Member @johann.fuehrer
                last edited by

                @johann-fuehrer said in Doubt about Suunto 9 Baro altimeter/barometer calibration:

                @mario_b said in Doubt about Suunto 9 Baro altimeter/barometer calibration:

                @johann-fuehrer just to be sure:

                • you know the exact elevation you are when reading your watch pressure? and the altimeter is set correctly?

                Definitely!

                • you did the fridge test which @Dimitrios-Kanellopoulos mentioned above?

                Yes, coming back to exact the same altitude. In my opinion it was very quick, some 5 minutes. But I’ll do it again if you like.

                • you are not inside a building?

                No.
                I did check this also inside the office (open windows), so ambient pressure inside and outside should be equal, no air condition and the behavior is the same like outside.

                Finally, meetings are over: watch was 1 hour in the fridge @ 8 degrees Celsius:

                10:00 before fridge, 1024 hPa, 30 C, @ 210 m
                11:00 immediately after taking out the fridge, 1024 hPa, 8 C, @ 210m
                11:15 another 15 mins later…, 1024 hPa, 25 C (still going up) @ 210m

                LOWW & ZAMG still at 1020/1019.5

                Dimitrios KanellopoulosD mario_bM 2 Replies Last reply Reply Quote 0
                • Dimitrios KanellopoulosD Offline
                  Dimitrios Kanellopoulos Community Manager @johann.fuehrer
                  last edited by

                  @johann-fuehrer if not affected by temp your sensor is pretty well clean and no defect

                  Community Manager / Admin @Suunto
                  Creator of Quantified-Self.io
                  youtube.com/c/dimitrioskanellopoulos
                  https://instagram.com/dimitrioskanellopoulos
                  https://www.strava.com/athletes/7586105

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                  • mario_bM Offline
                    mario_b @johann.fuehrer
                    last edited by

                    @johann-fuehrer are you at the “Umspannwerk Südost”? that’s the only point which is on 200m elevation. according to different maps, the rest of unterlaa is between 165 and 180m of elevation.

                    J 1 Reply Last reply Reply Quote 0
                    • J Offline
                      johann.fuehrer Bronze Member @mario_b
                      last edited by

                      @mario_b I had been, but now im at Hauptbahnhof/Belvedere which is (funny) also at 200m (Info from Geodatenviewer, wien.gv.at).But the pressure in different altitudes here in Vienna is not that big at the moment so that this would have an effect.

                      mario_bM 1 Reply Last reply Reply Quote 0
                      • mario_bM Offline
                        mario_b @johann.fuehrer
                        last edited by

                        @johann-fuehrer if the baro works, so altimeter is correct, meanwhile i would not mind, because i know over time it slightly drift anyway. but if you care, i would contact the support. the support is really great and helpfull.

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                        • Fatih KaleF Offline
                          Fatih Kale
                          last edited by

                          Hi all,

                          Yesterday I ran on a track while raining so watch was covered by my jacket.

                          When I check altitude profile it’s veird. It shows that I went downhill but it’s not possible as I was at the same location turning around. Why could this strange values observed?

                          Here is altitude profile
                          link text

                          Here is the temperature graph
                          link text

                          Suunto 9 Baro

                          freeheelerF sartoricS Brad_OlwinB 3 Replies Last reply Reply Quote 0
                          • freeheelerF Offline
                            freeheeler @Fatih Kale
                            last edited by

                            @Fatih-Kale
                            I’ve seen a similar behavior with my Suunto Core some years ago.
                            When the sensor is covered or in contact with wet skin it seals off and or has a pumping effect.
                            I would expect that this wrong measurement is detected by fusedalti, but until today I still don’t understand how fusedalti works in detail and what it does over an entire activity or when for some reason the alti is completely off reality.

                            living sideways

                            1 Reply Last reply Reply Quote 1
                            • sartoricS Offline
                              sartoric Moderator @Fatih Kale
                              last edited by

                              @Fatih-Kale
                              Check if you also have some magnetic stuff (like magnetic jacket cuffs)

                              SVTS - 2.40.38
                              SSSWHR BARO Amber - 2.8.32
                              Samsung A5 2016 - Android 7.0
                              Samsung A33 2022 - Android 14 - One UI 6.1
                              Suunto App Android 5.2.5 beta
                              Suunto App IOs 2.45.0 (19123) beta on MBP M1

                              Mff73M 1 Reply Last reply Reply Quote 0
                              • Mff73M Offline
                                Mff73 @sartoric
                                last edited by

                                @sartoric said in Doubt about Suunto 9 Baro altimeter/barometer calibration:

                                @Fatih-Kale
                                Check if you also have some magnetic stuff (like magnetic jacket cuffs)

                                For altitude issue? 🧐

                                Suunto Spartan Ultra (since 2016) FW: 2.8.24 (retired)
                                Suunto Vertical all black
                                Wife : S9PP
                                SA: Always the latest beta :)
                                Android 13, Galaxy S205G

                                sartoricS 1 Reply Last reply Reply Quote 0
                                • isaziI Offline
                                  isazi Moderator
                                  last edited by

                                  Also if it was raining and there was a storm coming in, or any other air front, and you just came out of your place, the altimeter may be adapting to pressure change.

                                  Watch: Suunto Vertical Ti

                                  Blog: isazi's home

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                                  • sartoricS Offline
                                    sartoric Moderator @Mff73
                                    last edited by

                                    @Mff73
                                    mostly for gps (so fusedalti)

                                    SVTS - 2.40.38
                                    SSSWHR BARO Amber - 2.8.32
                                    Samsung A5 2016 - Android 7.0
                                    Samsung A33 2022 - Android 14 - One UI 6.1
                                    Suunto App Android 5.2.5 beta
                                    Suunto App IOs 2.45.0 (19123) beta on MBP M1

                                    Mff73M 1 Reply Last reply Reply Quote 0
                                    • Mff73M Offline
                                      Mff73 @sartoric
                                      last edited by

                                      @sartoric said in Doubt about Suunto 9 Baro altimeter/barometer calibration:

                                      @Mff73
                                      mostly for gps (so fusedalti)

                                      I didn’t know about GPS issues with magnetic parts 😞 Compass OK, but GPS.

                                      Suunto Spartan Ultra (since 2016) FW: 2.8.24 (retired)
                                      Suunto Vertical all black
                                      Wife : S9PP
                                      SA: Always the latest beta :)
                                      Android 13, Galaxy S205G

                                      sartoricS 1 Reply Last reply Reply Quote 1
                                      • sartoricS Offline
                                        sartoric Moderator @Mff73
                                        last edited by sartoric

                                        @Mff73
                                        For sure not the signal , but I won’t discard issues due to components (maybe not directly related to gps) or maybe something related to fusedtrack

                                        In an old topic we discussed about issues with OHR reading due to magnetic interference … or maybe was gps … need to check it 😄

                                        EDIT :
                                        Was fusedtrack (keep asking to calibrate) in that case, don’t you remember ? 😉
                                        https://forum.suunto.com/topic/1371/s9-2-4-14-calibrate-fusedtrack-interface-problem-suunto-case-01853829/100

                                        SVTS - 2.40.38
                                        SSSWHR BARO Amber - 2.8.32
                                        Samsung A5 2016 - Android 7.0
                                        Samsung A33 2022 - Android 14 - One UI 6.1
                                        Suunto App Android 5.2.5 beta
                                        Suunto App IOs 2.45.0 (19123) beta on MBP M1

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                                        • Brad_OlwinB Offline
                                          Brad_Olwin Moderator @Fatih Kale
                                          last edited by

                                          @Fatih-Kale If the sensor is covered altitude readings can be wrong or distorted. I have this happen when the sensor is covered by a buff as well.

                                          Vector/T6c/Ambit 3 Peak/S5 Copper/S3/S7 Ti/S9 baro Ti/S9P Ti/S9PP Ti/Vertical Ti/Race Ti/RaceS/Ocean/Wing

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                                          • Fatih KaleF Offline
                                            Fatih Kale
                                            last edited by

                                            Thanks all it was possibly due to sensor was covered.

                                            I had another run last night, this time I strapped watch over the jacket and got correct readings.

                                            Suunto 9 Baro

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