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Old 07-16-16, 12:25 PM   #1
Perdido
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Bryton 310 Altimeter function

I need a new bike computer and I cycle at high altitude. The 310 has a barometric altimeter and those usually operate within a range. I went to brytonsport.com and could not find how high it's rated (max altitude). I saw how to set the current alt and "other" alt but nothing on the spec of the upper limit. Anyone know? TIA
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Old 07-22-16, 08:16 AM   #2
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Follow Up

Before I posted this question, I emailed Bryton for the spec and they never replied. I guess that's one reason not to buy their computer-no support. My old Casio barometer watch would only go up to 16,000 feet and I need something that goes higher. Couldn't find the answer on the web so I just looked at altimeter watches in general. Most watches don't include that spec either (?) but the watches that do specify -2300 to 32,000 ft or about 10,000 meters. Maybe that's why they don't include it? It's assumed to work anywhere on the planet. So if you have a barometric altimeter in your computer and the pressure sensors all came out of the same factory in China, it's probably good up to about 10,000 meters.
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Old 07-24-16, 09:34 PM   #3
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As far as I know, a barometric altimeter is really just a barometer, which ONLY tells the pressure from air, and it's the computer, in this case, Bryton Rider computers to do the calculation for elevation readings. According to Bryton, the barometer that was used on their new bike computers, including the Rider 310/330/530, when it is 1 ATM at sea level (this changes), the barometer is able to tell the air pressure change (altitude) up to 9km from sea level, which is more than enough if you look at the highest mountain, Mount Everest at 8848 meters.

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Originally Posted by Perdido View Post
Before I posted this question, I emailed Bryton for the spec and they never replied. I guess that's one reason not to buy their computer-no support. My old Casio barometer watch would only go up to 16,000 feet and I need something that goes higher. Couldn't find the answer on the web so I just looked at altimeter watches in general. Most watches don't include that spec either (?) but the watches that do specify -2300 to 32,000 ft or about 10,000 meters. Maybe that's why they don't include it? It's assumed to work anywhere on the planet. So if you have a barometric altimeter in your computer and the pressure sensors all came out of the same factory in China, it's probably good up to about 10,000 meters.
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Old 07-24-16, 10:14 PM   #4
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Originally Posted by wuwuisaac View Post
As far as I know, a barometric altimeter is really just a barometer, which ONLY tells the pressure from air, and it's the computer, in this case, Bryton Rider computers to do the calculation for elevation readings. According to Bryton, the barometer that was used on their new bike computers, including the Rider 310/330/530, when it is 1 ATM at sea level (this changes), the barometer is able to tell the air pressure change (altitude) up to 9km from sea level, which is more than enough if you look at the highest mountain, Mount Everest at 8848 meters.
Yes, I think all barometric altimeters work the same way. They measure atmospheric pressure, that is why you always have to re-calibrate them to a known elevation (like a bridge benchmark, or a known pass elevation) when a front moves through. The weather will change the atmospheric pressure that the altimeter is sensing. A gps altitude reading is constant because it is triangulating your position from a satellite and no weather is involved. I just could not find the spec from Bryton that their sensor would read to 9000 meters but it's nice to know that you found it, so thanks. Now I can be sure that it will work for me, 9000m is more than enough!
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