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Re: how accurate is the barometer and the thermometer?

hi all, i have a pro trek and a g-shock with barometer and thermometer, how accurate are really they?

today i had the g-shock and checked the altitude the result was: watch -130m, the android app altimeter gived 80 meters, i was in a field. and had the watch strapped to my backpack.

thanks
Hello my friend,

Both protrek and gshock are not accurate at altimeter function. You can always calibrate at known heights for keeping a realative good accuracy. But no matter what you do it will always loose the alti since it has not alti lock and with every barometric change due to weather changes, the watch will think that the height changes.

For baro its a different story. Its rather accurate and this shoudnt worry you since the most important at baro is the tendessy. Upcoming baro mean good weather, downcoming bad ( ofcourse not always and the most important tool at predicting tool is you and your experience)

I hope that i helped you my friend, enjoy your watches. If you want more accurate (non gps) altimeter, you should check suunto, timex, tech4o and a large plethora of brands.
 

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Re: how accurate is the barometer and the thermometer?

thank you for the explanation, so you you trust more the android app that uses the gps to determine your location?
For determining the location yes, but a phone or a gps watch wont last long as their batteries will let you down quite soon.

It depends on what activities you need.

For short periods sport activities a gps unit or a gps watch is the dead accurate solution.

For long lasting and tough enviroments outdoors activities like hiking etc. the best solution is watches with baro based altimeters. But as you will see by many people here there is two or three things that are needed to get casio altimeters more accurate.

There are several disqussions here and its funny beqause otherwise casio makes some really tough and welldesigned watches.
 

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Re: how accurate is the barometer and the thermometer?

sorry i meant, you you trust more the android app that uses the gps to determine your altitude.

what would be them 2 or 3 things that would make the
casio altimeters more accurate?
i dont know this app, i dont have adroid but i guess that it is pretty accurate, far more accurate than any baro based estimated altimeter.

The things i mentioned are these

  • mean sea level
  • alti lock
  • better logging functions, bigger dot displays for graphs, adjust the 5 meters step to 1 like the suunto core for example
  • some others? i may not know or understand since i am not an experienced abc watch user. I just try to help you here

If you see some posts here there are experienced users that show detailed opinions about altimeter accuracy.

BUT dont let this discourage you, as i told you before, it depends on what accuracy you demand. Not theoritically but practical in you real life activities.

To conclude my thoughts

the baro is good as the important thing is the tendessy
the alti will ve relative good accurate as long as you calibrate it
 

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Re: how accurate is the barometer and the thermometer?

thanks for that, was a great read.

One last question: if im sitting on any beach around the world, am i always at see level? meaning zero altitude?
Im really happy that i helped you my friend.

Yes, and its a good place to calibrate your altimeter ( sea level= 0 m)
 
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